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Psychic Sister

Category: Incest
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Author’s Note: Thanks to LizHaze once again for the editing, and she’s even got a story of her own now! Maybe check it out?


I kind of liked summer. Sure it meant living at home instead of away at university, as well as feeling like a bit of a failure for once again not having a summer job, but it had its upsides. It was nice being able to sleep in any day I wanted, and not having to constantly worry about a paper I was supposed to write or a test that was coming up. It tended to be a very stress-free time for me.

Also, there was my sister Katie. I missed her sometimes when we were both gone to our respective campuses for the better part of the year. Our relationship had always been a little unconventional, and it was hard to explain what exactly made me enjoy having her around. I guess part of it was just how much of a goofball she could be.

Like one evening when I was sitting out on the back deck, doing nothing in particular other than taking advantage of the breeze that had come up after a too-hot day, she came out and sat down beside me with a serious look on her face. Or rather, it was supposed to be her serious face, but I knew her well enough to know she was faking it.

“I learned how to read minds today,” she told me, not cracking even a hint of a smile.

“Really,” I said, acting interested. “How does that work?”

“It’s a secret,” she said. “I can’t tell just anybody. ‘Specially you, because you’d just use your powers for evil.”

“Good point. Alright then, what am I thinking of?”

“Too easy. You’re thinking about how I’m full of shit and can’t really read your mind.”

I laughed softly, then nodded. “Okay, I’ll give you that one. Try it again, I’ll think of something else.”

It was a bit silly since I was really just humouring her, but I actually tried to come up with something good for her to guess. As tended to be the case in such situations, when I was put on the spot the best I could come up with was either a number, or a colour. I went with the number three.

Katie shifted slightly so she could face me directly and assumed an air of intense concentration. The way she appeared to look right into my soul was far more convincing than it had any right to be.

Suddenly she jerked away and made a disgusted expression.

“Ew, gross!” she said. “Why would you even think something like that around your little sister? You’re such a perv!”

“What? I didn’t even–” I started defensively before I realized she was just messing with me. Of course she couldn’t see what I was thinking, I knew that. Plus I truly hadn’t been thinking any dirty thoughts. Almost twenty years of knowing her and she could still get me every now and then. “You brat,” I said.

Katie finally cracked and started giggling uncontrollably. I rolled my eyes and waited her out.

“You actually believed me for a second, didn’t you?” she said. “You were so ready to argue about what you were thinking.”

“Yeah yeah,” I said. “Just you wait, next time you read my mind it really is gonna be something dirty.”

She adopted a shocked expression. “You wouldn’t want me to see naughty things, would you?” she said in an innocent voice. “You’re supposed to protect me from bad influences.”

“Oh give it up. We both know you’re not exactly the naive little sister you like to pretend you are. And it’s not like you can tell what I’m thinking anyway.”

Katie smiled enigmatically and stood up. She bent down so her mouth was right next to my ear before walking away.

“You should really be more creative next time than just thinking of a number,” she whispered.

I stared after her as she left. It must have just been a guess, but it was dead on either way. I couldn’t help letting the tiniest bit of doubt creep into my head.


The next morning I found Katie in the living room watching cartoons. She was sitting upside down on the couch with her feet over the back and her head almost touching the floor. It was barely even a bizarre enough thing for her to be doing for me to register it.

“How long do you think it would take for all my blood to go to my head and make it explode?” she asked.

“I don’t think that’s how it works,” I said.

“Oh,” she said.

I sat down next to her, the right way up. Her shirt had fallen a little since it was the wrong way around, and I poked the exposed part of her tummy just hard enough to get a reaction.

“Hey!” she protested. “That’s not nice.”

“I thought you would have seen it coming,” I said. “Seeing as how you can read my mind and all.”

“I wasn’t concentrating on that,” she said. “And I’m not that good at it yet. It takes a lot of work.”

“Maybe you should have started simpler and worked your way up. You know, like practice moving small objects with your brain, then gradually going to bigger and bigger ones. It would probably help with the mind reading.”

“I tried that. Apparently telekinesis isn’t my strong suit.”

“No kidding.”

Katie flipped herself around so she was upright again, and straightened her hair.

“You’re making fun of me, aren’t you?” she said.

“You’re the one who’s been trying to convince me you’re a psychic,” I countered.

“What would it take to prove it to you?”

“Seriously? Come on, you don’t really have magic powers. You’re taking the joke a little too far now.”

“Twenty bucks says I can convince you.”

I hesitated for a moment since it seemed too easy and therefore had to be a trick. Katie had correctly guessed that I was thinking of a number the night before after all, but there was still no way she could really read my mind.

“Fine,” I said. “Should be easy money.”

“Okay,” she said. “Deal.”

She turned her body to look directly at me and frowned in concentration. I was caught out a little at first since I hadn’t actually decided what I was going to think about, but then I remembered what I’d told her the night before. I had warned her there was going to be something dirty in there on the off-chance that she really could read my mind. Might as well follow through on that.

There had been a particularly hot porn video I’d watched the night before when I jerked off before bed. It had involved two girls and quite a few different toys. I thought it was perfect for the current experiment. I ran through as much of it as I could remember in my head and stared right back at Katie with a neutral expression.

After a moment she smirked and rolled her eyes.

“God, you are a perv aren’t you?” she said quietly.

“I did warn you,” I said. “But I’m gonna need more than that. I’m still pretty sure you’re just guessing.”

“Okay, well… you’re thinking of some girls… and they don’t have very many clothes on….”

As she spoke she started pulling her shirt up until I reached out and grabbed her wrist.

“What are you doing?” I asked.

“Using a visual aid,” she said.

“You don’t… just leave your shirt on.”

“I have a bra on underneath. Don’t be such a baby.”

Katie wrestled free of me and pulled her shirt off in one smooth motion before I could stop her again. She did indeed have a bra on, but that didn’t prevent the situation from getting a little weird.

“Now what exactly is that going to help?” I said.

“If all else fails, I’m just gonna hypnotize you,” she said.

“With your boobs?”

“With my boobs.”

I shook my head. “I don’t know about you sometimes.”

“You should be happy for me that I’m learning all these new skills.”

“Hypnotizing guys with your boobs isn’t really much of a skill. Lots of girls can do that,” I pointed out.

“It’s not as easy as you think. Takes practice.”

She started swaying gently as she spoke, attempting to distract me I assumed. It was possible she thought she could just weird me out enough with her partially exposed breasts that I’d give up.

“You’re stalling,” I said.

“Nuh-uh,” she said. “Just testing.”

“Testing to see if you can hypnotize me?”

“Yep. Is it working?”

She put a little extra swing into her movements, as though it would help. Mostly it just confirmed for me that she was trying to make me uncomfortable. Unfortunately for her I had every intention of beating her at her own game. If she wanted to ‘hypnotize’ me, I’d just play along.

While trying not to be too obvious about it, I began following the movement of Katie’s breasts with my eyes, then my whole head. I saw a smile forming on her lips, and she looked like she was about to say something, but I acted first and raised my hands zombie-like toward her chest. She backed away slightly and I followed.

“What are you doing?” she said, giggling as she swatted at my arms.

I didn’t say anything and just kept reaching for her breasts, fully expecting her to abandon the couch at any moment to get away from me. That was my planned method of victory at any rate.

“Cut it out!” Katie said, her authoritative voice being undermined somewhat by her inability to keep a straight face.

“Must… get… the boobies,” I said in a droning monotone.

“You doofus, I know you’re doing this on purpose.”

She made one last attempt at fending me off before my hands reached her breasts. Honestly, I hadn’t really expected that to happen and I wasn’t sure where to go from there. I got in a quick squeeze anyway, mostly out of reflex.

Katie absolutely cracked up and finally threw herself backward to escape me, then rolled onto the floor still laughing. I chased her part of the way, but she got her feet between us and delivered a forceful kick to my chest to knock me away.

“I guess I kind of deserved that,” she said.

“Yeah, you kind of did,” I said.

“Hope you enjoyed getting to feel me up, because I’ve learned my lesson.”

She pulled her shirt back on as she spoke, covering up her breasts again. It was weird to realize that I was slightly disappointed about that.

“Who are you kidding?” I said. “You never learn.”

Katie stuck her tongue out at me, then flounced away. I could have sworn there was a little more wiggle in her hips than usual, although to be fair I didn’t usually pay any attention.


It started raining late that afternoon, never really getting heavy but remaining steady well into the evening. I went out to the back deck again at some point, which seemed to be the start of a new habit for me before bed. It was a very different experience when it was raining however, and despite the shelter of the sloping roof protecting it, I still had to be careful of a couple spots where the rain was hitting.

“There you are,” Katie said, walking up behind me as I watched the rain. “I couldn’t find you.”

“Yeah, who’d have thought I’d be the same place as last night,” I said. “You’d have to be some sort of mind reader or something.”

“Ha ha,” she said. “You’re not as funny as you think you are.”

“I’m exactly as funny as I think I am, thank you very much.”

Katie walked over to the railing and extended her hand to let a few raindrops fall onto it. She watched them roll across her skin like she’d never experienced water before.

“You remember when we were kids and sometimes we’d go running in the rain?” she asked. “And we didn’t even care about getting soaked or anything.”

“Yeah, I remember that,” I said. “But we’re older and wiser now, and more importantly mom’s not going to bring us towels and dry clothes if we do something like that.”

“We could, like, take our clothes off first,” she said. “So they don’t get wet.”

“Sure. You first.”

“I mean leave our underwear on, not go completely naked. Don’t get too excited.” Katie paused for a second. “Actually, maybe that would even be too much for you. You went kind of nutty just from me taking my shirt off before.”

“You know damn well that was a joke.”

“Whatever. Are you in?”

“Depends, are you serious?”

“I will if you will.”

Katie folded her arms across her chest and waited for my answer. It wasn’t like I could say no, not after a challenge like that. She’d just keep bringing it up for the next week, or maybe even longer, if I wussed out.

“Okay fine, let’s do it,” I said.

She smiled and reached for the bottom of her shirt. I copied her actions at a slightly slower pace to make sure she wasn’t going to try faking me out, but her clothes did start coming off. Before long we were both semi-naked and kicking our respective piles of clothes into the corner where they would stay dry.

I will admit to taking a few peeks at my sister as she stripped, and a few more as she stood in only her bra and panties. Just because I was her brother and it was a little weird to be checking her out didn’t mean she didn’t have anything worth seeing. My mind flashed back involuntarily to when I’d grabbed her boobs, and part of me kind of wanted to try that again.

“Ready?” Katie asked before I could act on any of my dirty thoughts.

“As I’ll ever be,” I said.

Our backyard wasn’t completely private. Anyone looking from the right place in one of our neighbours’ houses, or even from our house, could generally see most anything that went on back there. However, given the rain and the general lack of light except for what little came from inside the house, the visibility was diminished quite a bit from what it usually was. I hoped that would be enough to prevent us from being seen. I didn’t feel like explaining why we were parading around in our underwear in the rain. Honestly, I wasn’t even sure I could.

Katie took my hand and together we walked down the few steps off the deck into the wet grass. The rain didn’t immediately soak us, but it didn’t take very long to go from dry to wet either. My sister raised her arms up to the sky and tilted her head back for a moment, then slowly twirled in place. I decided against pointing out how her few remaining articles of clothing were slowly being made transparent.

“This is pretty awesome, isn’t it?” she said.

“It’s certainly wet,” I said.

“Oh don’t be a spoilsport. Let yourself enjoy this.”

At Katie’s urging I emulated her, spreading my arms and closing my eyes, simply feeling the water hitting my skin and running down my body. It was actually kind of fun in a childish sort of way to be out in the rain without having to worry about hurrying to shelter. So much of the time rain was something to avoid because you’d have to deal with wet, uncomfortable clothes otherwise, but in this case it wasn’t quite the same issue.

My moment of reflection was rudely interrupted by a hand softly tapping my chest. I cracked open my eyes to see Katie dancing away from me with an impish grin.

“Tag,” she said. “You’re it.”

It took me a second to process, but then I started chasing her without really stopping to think about whether I should. There were some things that were ingrained in me from childhood, and one of them was that when I got tagged, particularly by my sister, I needed to get her back.

We went back and forth several times as I first caught up to her, then she caught me and so on. I targeted her butt when I could since her breasts were usually on the wrong side of her body to reach easily, and a couple times I felt her do the same, though I couldn’t be certain it was on purpose.

The conditions were not exactly ideal for running, but in some ways that made it more fun. Both Katie and I slipped and fell far too many times in the slick grass as we chased each other around and it was next to impossible to stop or change direction quickly once we got moving. Eventually this led to a major collision when she tried to turn and lost her footing right before I ran into her. We tumbled together onto the ground, with me only barely managing to not land directly on top of her.

Katie made no move to get up right away, so I didn’t either. We were both breathing a little heavily and had stupid smiles on our faces from acting like kids when no one was around to see.

“See, that was kind of fun, wasn’t it?” Katie said.

“Yeah, you’re right, it was,” I said.

The movement of her chest as she regained her breath drew my attention to her breasts, though I tried to be subtle about looking. Her bra was pretty much soaked at this point and her nipples were just barely visible to me through the material. I got away with checking her out for maybe a minute before she realized what I was doing.

“Oh my god, grow up,” she said, covering her breasts with her hands.

“Says the girl who just instigated a game of underwear tag,” I retorted.

“That was perfectly innocent. You’re just being a perv.”

“Well you can read my mind, can’t you? You should have known that would happen.”

Katie sighed, but really didn’t look all that upset as she climbed to her feet. Plus she gave me a nice view of her butt as she stood which I was pretty sure was on purpose. Either way, her super-clingy underwear left little to the imagination.

I got up too, and together we walked back to the relatively dry sanctuary of the deck. Our clothes were still there, thus far untouched by the weather, but putting them back on over our underwear didn’t seem like a great idea.

“Turn around,” Katie said.

“What?” I said.

“Turn around and don’t look while I change. I don’t know about you, but I’m gonna take my bra and panties off first.”

“Oh, okay.” I turned to face the opposite direction from where she was. “How do you know I won’t peek?”

“I guess I just have to trust you, much as it pains me to do so.”

I grinned, but didn’t look over my shoulder even once while my sister changed. I knew she’d be watching me like a hawk anyway.

“Could you at least pass me my clothes over?” I asked since I couldn’t reach them myself without disobeying her wishes.

“Just gimme a second,” she said. “Almost done, then you can have them.”

Soon she had finished, and I was allowed to grab my clothes while she wrung out her underwear as best she could. She then went inside and left me alone on the deck. Suspecting nothing I quickly stripped off and reached for my shirt first to give my lower half slightly more time to dry off. Katie, the little back stabber, popped back out while I was standing there naked. And she was holding a camera.

“Say cheese,” she said just before the flash went off.

I froze for a second in pure confusion, then lunged for her to try and grab the camera away. She was already moving though, and I found myself chasing her naked through the house not quite able to catch up. In the back of my head I knew it would probably have been better to get dressed first and murder later, but once I was moving it was too late to change my mind.

Katie went straight for her room, and the only reason I made it in time was because she had to stop and try to close the door behind her, which, unfortunately for her, she didn’t have time to do. I tackled her to the floor harder than I meant to, but I was pretty sure I hadn’t injured her since she was still clutching her camera in a death-grip.

“Give it!” I demanded.

“No,” she said.

I tried to reach around and take it from her, but she tucked her arms under her body to protected it.

“Katie, give me the camera,” I said.

“It’s mine,” she said.

“Yes, and you can have it back as soon as that picture is deleted.”

“Uh uh, it’s my picture too.”

“You know I can’t let you have that.”

“Why not? I’m not gonna blackmail you or anything. I won’t show anyone else, I promise.”

“Then why do you even want it? You just want it for yourself or something?”

It was only after I finished the sentence that I realized how awkward the implications could be. That led pretty quickly to me remembering that I was currently naked and on top of my little sister with my cock pressed against her butt. That was even more awkward.

“Shut the door at least,” Katie said quietly, having apparently come to more or less the same conclusion I had.

I gingerly pushed myself up to a kneeling position and swung the door closed behind us. Katie rolled over and sat up, then handed the camera to me.

“Here,” she said.

“Um, thanks,” I said. I stared at it in my hands for a moment, then looked back up at her. “You can keep the picture if you really want. As long as no one else sees it.”

“Who exactly am I gonna tell that I have naked pictures of my brother?” she said. “Plus, it’s not a great picture anyway.”

I looked down at the screen and navigated back to the last picture taken. I was in it, but only barely. Mostly just my shoulder and half of my face. I hadn’t even considered that she hadn’t had time to aim properly.

“Well shit,” I said. “That was hardly worth the effort.”

“You know I only did it to get a reaction out of you, right?” she said.

“I should have guessed.”

I handed the camera back over, then sat back and tried to ignore how exposed I was. Since there was no real threat anymore I probably could have gone back for my clothes at that point, but that seemed more embarrassing somehow. Like I would have to admit that I cared.

“You look good like that, you know,” Katie said.

“Naked you mean?” I asked.

“Yeah. It works for you.”

“Thanks, I think.”

I had been trying to casually cover my cock, but that became more difficult as I started getting an erection. And every time I noticed my sister’s eyes darting downward toward it that problem just got worse.

“Should I, like, just go now?” I asked, jerking my thumb toward the door.

“If you want,” she said. “You don’t have to.”

“Okay, it’s just… I’m gonna need to go jerk off or something pretty soon.”

Katie smiled at my lack of subtlety. “I know. It’s not like you can keep that much of a secret. And I’m not talking about reading your mind this time.”

I felt myself flush. “It’s not like I can help it.”

“I know. Can I ask you something though?”


“What would you do if you had a naked picture of me?”

“That… is a good question.”

“Mm-hm. I think it’s probably more like you just don’t want to answer it. I think I know exactly what you’d do with it.” Katie made a jerking off motion with her hand as she finished speaking.

“Maybe I would,” I said. “You’ve been doing a good job of tempting me lately.”

“What about if I took my shirt off right now? Would you jerk off to that?”

I hesitated, justifiably, before saying anything. Katie could definitely see my cock already, so it wasn’t like I’d be revealing anything new. But at the same time, the obvious ‘moral’ choice would be to decline. Unfortunately for morality, horniness beats it out almost every time.

“Yeah,” I said. “I would.”

“Good to know,” she said. She slowly reached for the bottom of her shirt, looking me directly in the eyes the whole time, then abruptly hopped to her feet. “Okay, well I’m going to bed now. You should probably go collect your clothes before someone else finds them tomorrow.”

“Oh no fucking way!”

“What? I just wanted to know how much of a perv you are. You don’t think I’m actually going to enable you, do you?”

I stood up too, my erection pointing straight at my little sister. I was pleased to see her gaze instantly fix on it, revealing her indifference for the pretense it was.

“You got me naked and made me chase you into your room,” I said. “This is your fault.”

“Is not,” she said without any real conviction. She stared at me in silence for a moment, and I could tell she was trying to make some kind of decision. “I’ll lift my shirt for ten seconds,” she finally said. “Then we’re done.”

“A minute,” I countered automatically.

“Thirty seconds.”


Katie opened her mouth as though she was going to continue negotiating, then closed it and shrugged.

“Okay,” she said.

She hardly wasted any time at all in grabbing the bottom of her shirt and lifting it up so that her breasts were fully exposed to me. I already had a general idea what they would look like, but it meant next to nothing when faced with the near-perfection of their full, uncovered magnificence. Certainly my little sister had nothing to be ashamed of when it came to her boobs, which may have partly explained her haste in revealing them, though it could also have been simply her attempt at getting it over with as fast as humanly possible.

Katie’s lips moved slightly and I could hear a soft whisper as she counted off seconds under her breath. I wanted to enjoy the moment while it lasted since I had no idea when, or even if, it would happen again, but I was far too distracted by the constant reminder that my time was running out.

In a flash of dubious inspiration I reached out and placed my hands right on her breasts. It was a questionable maneuver, even to me, but it did get her to stop counting.

“I don’t remember saying you could do that,” Katie said in a quiet, yet slightly menacing tone. She tried to pull her shirt back down, but I held it in place.

“Time’s not up yet,” I said.

“You’re touching, not looking. I only said you could look.”

“You never said I couldn’t touch.”

“I’m your sister, I shouldn’t have to explain to you why you can’t grab my boobies.”

“But they’re so awesome, how am I supposed to resist?”

Katie actually smiled a little before she caught herself. It was amazing how effective a compliment could be at times.

“Fine,” she said, struggling to maintain a straight face, “you had your fun, now let me go to bed.”

“Okay,” I said, dropping my hands back to my side. “Good night.”

“Good night.”

She pulled her shirt back into place and turned partly away until I left the room, pretending not to pay any more attention to me. However, if her mind was anything like mine, and it was, I knew she’d be thinking about what just happened at least until she fell asleep. It had been kind of a weird evening for both of us, to say the least.


I fully expected things to be a bit awkward between Katie and me the next day. She’d seen me naked, I’d seen and touched her boobs, and we hadn’t really talked about the ramifications of either of those things. It seemed like a good recipe for trouble.

However, judging by my sister’s disposition, it may as well have been just another day. The first time I saw her the next morning was when she snuck into the kitchen behind me and stole my bowl of cereal while I was putting the milk back in the fridge. Not the sort of thing she would do if she hadn’t still been as comfortable as ever around me.

“Brat,” I said as she chewed happily on her first spoonful of ill-gotten breakfast.

She stuck her tongue out at me and kept eating. I sighed and started making another bowl for myself.

“So last night was kinda fun, huh?” Katie said.

I glanced at her. “Fun. That’s all you think it was?”

“And weird. Mostly fun though.”

“Thought you didn’t like me grabbing your boobs.”

“I never said that. I just said I didn’t give you permission. Sometimes that makes it more interesting though.”

“I really hope you don’t go around telling other guys that,” I said as I put away the milk for the second time. “Some guys are okay with doing things without permission, and I’m not talking about a little groping.”

“Don’t worry, I wouldn’t let anybody touch me if I didn’t want it.”

There was far more significance to her statement than her casual tone let on. The way she looked at me confirmed what her words implied, that she hadn’t minded at all what I did. She might have even liked it.

“Good to know,” I said. “Maybe I should try feeling you up again sometime.”

“What makes you think I’d even let you?”

Her whole body language, and especially the gleam in her eyes, was daring me to do something. However, in typical fashion, it didn’t look like she was going make it easy on me.

I advanced toward her and she stepped back, setting down her half-empty cereal bowl as she did. She didn’t actually try to get away so much as prolong the time it took to get close enough to her. Soon she backed into a wall and was trapped as I walked right up in front of her, just inches away. She was doing her best to look like everything was normal, but she was clearly either nervous or excited about whatever I was going to do. Probably a little of both actually.

I leaned in really close, almost like I was going to kiss her. It would have been interesting to see how she reacted to that I supposed, but that wasn’t the plan.

“Well, I guess if you don’t want me touching you,” I said softly, “then I won’t.”

Without giving her even a second to process, I turned around to grabbed my bowl of cereal and headed for the living room.

“You jerk!” she called after me when she realized I was just going to leave her hanging.

Something hit the wall hard just as I turned the corner, almost where my head would have been, but I just smiled to myself and kept walking. Katie caught up to me right as I sat down on the couch and she glared at me with her hands on her hips.

“What’s up?” I asked.

“This is seriously how it’s gonna be?” she said.

“I don’t know what you mean,” I said, doing a bad job of feigning ignorance.

“Ugh, why do I bother?”

Katie sat down next to me with her arms crossed and generally doing her best to look annoyed. I let her be for a couple of minutes while I ate enough of my cereal to not feel like I was completely starving, then I set it aside. I shifted my seat over a little to snuggle right up beside her and wrapped my arm around her shoulders, letting my hand come to rest on her breast.

“You know I was just messing with you right?” I said. “Your boobs are too awesome to give up on that easily.”

“I know,” she said. “Doesn’t mean it wasn’t annoying anyway.”

“Well maybe if you’d stop trying to play your silly little games and just say what you want….”

“But then I’d be just as much a perv as you. I need to be the innocent one.”

“That… why exactly? Leaving aside for the moment that you’re far from innocent.”

“Because I’m your little sister and you need to be a bad influence on me and not the other way around. It’s just how things work.”

“Bullshit. You just like the idea of me not being able to resist you.”

Katie smiled. “You saying you can’t resist me?”

“Maybe. What if I am?”

“I’d probably be okay with that. Reading your mind was fun and all, but I think there’s other parts of you I’d rather play with.”

She reached down and squeezed my crotch gently, making me groan at the sudden contact with my semi-hard cock. Until that moment I hadn’t even realized how turned on I was getting just from fondling her boob and our casually suggestive discussion. I kind of wanted her to keep her hand in my lap a little longer, but instead she kissed me on the cheek and stood up to leave.

“I got some things to do,” she said. “I’ll talk to you later.”

“Yeah. Later,” I said. “Funny how you think it’s okay for you to just walk away, but it’s not okay when I do it.”

Katie turned around and pulled her shirt up for a couple seconds, revealing that she wasn’t wearing a bra.

“The difference is I know how to make it up to you,” she said as she pulled her shirt back down and kept on going.

I thought about arguing the point, but honestly, getting flashed by her genuinely was enough to keep me happy. Her boobs were just that awesome. The thing that worried me is that she might start to abuse that power.


It was a few hours later when Katie came to find me again. I’d been thinking about her far too much in that time, not that I’d admit it to her.

“Hey, you wanna go for a walk?” she asked.

It was kind of an odd question coming from her, since I couldn’t remember the last time we’d done something like go for a simple walk together. If either of us really wanted to go walking, and usually we didn’t unless there was some kind of extra incentive, we’d just go by ourselves. Granted, with the way things had been going, there was a decent chance this would be one of those times where there would be that incentive.

“Okay,” I said. “Anywhere in particular?”

“I was thinking maybe… out to the woods.”

Our house wasn’t too far from a small forest. The sort with lots of trees and rocks and a river running right through the middle, but not much in the way of animals bigger or more dangerous than the occasional squirrel. It was the sort of place teens would go at night to make out or get drunk, and quite often both. During the day, however, it tended to be mostly clear except maybe for the occasional person walking a dog or just out for a hike.

“Sounds good,” I said.

“I knew you’d think so,” Katie said. “Of course, you’re probably just hoping I’ll show you my tits again.”

“Mostly,” I agreed.

It was maybe a five minute walk to get to the edge of the woods. I spent the whole time letting my hand casually rest on Katie’s butt, though she made it more difficult for me by purposefully speeding up or stopping to look at something. At one point she even laced her fingers through mine and smiled sweetly at me while we walked hand in hand, as though that had been my intention the whole time.

Once we actually made it to the edge of the tree line that was our destination, it wasn’t really practical to walk side by side anyway. Sure there were some decent paths carved out by people over the years, but that was never any fun. Just like when we were kids Katie almost immediately wandered whichever direction she felt like, and unlike when we were kids I followed as close behind her as I could. I got a great view of her ass anytime she had to climb over something.

Eventually we made it to the river, which was pretty much inevitable given how it bisected the area. The semi-random route we’d taken left us at a part of it with no one around, and very little chance of anyone stumbling onto us. As it turned out, Katie’s mind was working along the same thought process as mine.

“Wanna go swimming?” she asked.

“Sure,” I said. “In our underwear I assume?”

I knew I was slightly hard already from staring at her butt the whole way, and I was certain it would only get worse, but I wasn’t too worried about that. Mostly I was just focused on the chance to check out my sister without so many clothes on.

“You can go in your underwear if you want,” she said. “But I’m not wearing any.”

Her shirt came off in a smooth, practiced motion, and I appreciatively took in the sight of her naked breasts once again. Apparently she’d decided against putting on a bra since earlier, which worked for me just fine. I was also getting excited at the suggestion that she had no panties on either.

I didn’t get a good frontal view as she finished stripping, but as she removed her shorts I did get a good look at her naked butt. She even wiggled it a little for me when she was done, before walking directly toward the riverbank.

“You coming, or are you just going to stand there?” she called to me.

Her words jolted me into action, and I quickly started pulling off my clothes. She’d already seen pretty much all there was too see, there wasn’t much point in hesitating. Plus the sooner I joined her, the sooner I could get some closer looks at her, and the easier it would be to ‘accidentally’ get my hands on her when the opportunity presented itself. When I thought about it, Katie was probably right about me being a perv.

The water was cold but not bitterly so, which I discovered when I stepped in. We were also at a wide enough section of the river that the water wasn’t moving all that fast, nor did it go all that deep. Katie had been trying to find the deepest section, and hadn’t yet managed to submerge her breasts, much to my delight.

“I think I kind of like being naked and wet,” she told me when I got close enough.

“Yeah, I bet you do,” I said.

“Not like that you jerk,” she said, splashing water at me with one arm. “I mean really, being outside and just, like, totally free….”

“Mm-hm, I do enjoy seeing you so ‘free.'”

“Ugh, why do you have to ruin everything with your dirty thoughts?”

“Because you’ve been putting a lot of dirty thoughts in my head.”

I finally made it near enough that I could partly see the areas of her body covered by the river. The movement of the water meant I couldn’t get a clear look, and therefore she couldn’t either, though I was sure she could see well enough to tell that I had a full erection at that point. As if to prove me correct, she swayed slightly and let her hip brush against the tip of my cock.

“Someone’s getting excited,” she said.

“Like I can help it,” I said. “And don’t try to tell me you aren’t.”

She smiled impishly. “How you gonna prove it?”

In response I reached out to grab her waist and pull her closer. I didn’t actually have any intention of trying to prove that she was turned on too, I knew as well as she did that I couldn’t very well do that when we were both standing in water up to our chests, but it was a good opportunity to see what she’d let me get away with.

What I hadn’t expected was that Katie would twist her body as I tugged her toward me, managing either on purpose or otherwise to aim her butt directly at my erection. I groaned out loud as my cock slid against her naked and very wet ass.

“Ew, gross,” she complained, though she couldn’t hold back her giggling long enough to make it sound the least bit convincing.

She struggled against me for a moment before I let her go, with the effect of stimulating me even more every time her wonderfully slippery skin contacted mine. When she turned around so I could see her face again I noted that she appeared slightly flushed, and her breathing was definitely a little irregular.

“Yeah, you’re totally getting horny,” I said.

“Maybe I am,” she said. “So what?”

Before I could answer she ducked completely underwater, the practical equivalent of covering her ears and singing ‘la la la’ for the purposes of not listening to me anymore. When she surfaced again, a few feet away from where she’d been, I just let it drop and watched her straighten out her hair.

For the next little while she alternated diving under the water and lazily swimming around while I mostly watched. Sometimes I’d join her in sinking to the riverbed or trying to swim against the current without cheating and touching down with our feet. Mostly we both attempted to get in a quick feel of the other’s body without seeming obvious.

Despite her claims of innocence, Katie could apparently get quite grabby when she was in the right mood. A couple times, when I pretended not to notice that she was touching me, it would last longer and she would even stroke me a little before swimming away. Needless to say I stayed hard most of the time we were in the water, to the point where the urge to simply jerk off and cum got almost overpowering. I eventually gave in and headed to shore, intending to take care of myself even if my sister wasn’t ready to get out yet.

“Where ya going?” she asked.

“To masturbate,” I said.

“Wow, subtle.”

“I’m nothing if not subtle,” I agreed.

Once I made it back onto the grass and started looking for a good place to sit, I realized Katie was following me after all. I sat down with my back against a tree and watched my sister as she emerged from the water, incidentally getting my first glimpse her pussy in the process. From what I saw, it was beautifully shaven and made me want to get a much closer look at some point in the not-too-distant future.

“Seriously?” she said when she noticed where my eyes were focused.

“Hey, I’ve seen you checking out my dick,” I said. “Don’t start the whole ‘you’re such a perv’ thing again.”

Katie sat down a few feet away and positioned her legs such that I couldn’t quite see her pussy anymore.

“Can’t help it when it’s always sticking out like that. Plus it is kinda hot seeing it,” she admitted.

“Yeah that’s what I thought,” I said.

“Oh come on, you know this wouldn’t be nearly as much fun if I made it easy on you.”

“I think it’d still be pretty fun.”

“Mm-hm. You know what else would be fun?”

As she left her question hanging, she let her hand slide down between her legs. I couldn’t see what she was doing, but it was obvious enough.

“Are you doing what I think you’re doing?” I asked.

“Depends what you think I’m doing,” she said.

Her wrist was moving in small but regular motions, and it didn’t take much imagination to guess that her fingers were pretty busy too. My little sister, my completely naked little sister, was masturbating right in front of me. It was one of the hottest things I’d ever witnessed, and I couldn’t even see it that well.

It didn’t take any more convincing than that for me to join her and wrap my fingers around my impatiently erect cock. It felt slightly unfair that Katie would get a better show than me, but I also felt that complaining too hard would be a very stupid thing to do. She’d probably just put her clothes back on to spite me.

For a while we masturbated together in silence, eyes unabashedly glued to each other as we did. It occurred to me at some point that it was probably the first time I’d ever jerked off with someone watching me. The fact that the other person in question was my sister was just insane. I wondered if she thought we were being as crazy as I did.

At some point, for reasons that were her own, Katie shifted a bit and lowered one of her legs. Her movement gave me a much better view of both her pussy, in irregular flashes, and her fingers at work. I was already pretty on edge, and this was enough to push me over. I felt my orgasm coming, and it was going to be a good one.

With a long groan I sped up my stroking speed on my cock just seconds before cumming. My semen shot out in a surprisingly impressive arc to land harmlessly on the grass. It was such a liberating experience to be able to cum like that and not worry even a little about minimizing the mess or cleaning up afterward. Katie had had a better point about the whole ‘naked outdoors’ thing than I had given her credit for.

In response to my display my sister’s self-fingering had picked up pace as well, though I found my interest in it somewhat diminished. I lazily crawled over to a nice, unspoiled spot in the sun and stretched out to watch while she finished herself off. Just because I wasn’t horny anymore and her body didn’t hold quite the same fascination didn’t mean I wasn’t going to keep looking. I was sure future me would appreciate my ‘sacrifice,’ and the memory I would have for later.

Katie’s eventual climax wasn’t as visually dramatic as mine, but it was obviously satisfying for her. The sigh of pleasure she exhaled and the way her whole body relaxed all at once after having slowly tensed up right until orgasm was proof enough of that in my mind. After a minute or two she crawled over next to me and together we lay naked in the sun, enjoying life in a simultaneously bizarre and normal sort of way.

“You have good ideas sometimes, you know that?” I said.

“I am aware,” she said.

She was lying on her stomach, arms folded under her head and a faint, but unfading smile on her lips. I shifted so I was on my side and reached out to trace my finger slowly down her spine. I didn’t crave sexual contact with her the way I might have before cumming, but I still had a desire just to be close to her.

I ran my finger up and down Katie’s back, and gradually it turned into sort of a lazy one-handed back rub. Eventually I even sat up and began to put a little more effort into it. Judging by the occasional contented sigh she let out, I assumed she didn’t mind what I was doing too much.

“You wanna know something?” she asked in a satisfied, unhurried voice.

“Sure,” I said.

“We’re gonna have sex,” she said.

I hesitated, then continued rubbing her back while I processed her statement.

“You mean right now?” I asked.

“No, not now. We’re not ready for it yet. Just… sometime. Maybe in a few months, or years, or even just days, but it’s going to happen.”

“You can predict the future now can you? Another talent you’re working on?”

“I don’t need to see the future to know it’s going to happen.” She rolled onto her back, leaving me without a back to rub, but trading that for the view of her gloriously naked front side. “Tell me you don’t think we’ll do it,” she dared me.

“I can’t. But… I dunno, it’s such a weird thought.”

“Mm-hm, it is. But it’s nice too. I like thinking about it.”

With my sister lying out all naked in front of me like she was, it was hard for me not to think about it too. It would be so easy, with no one around and our clothes already conveniently out of the way, and to some extent we both seemed to want it.

But, like Katie said, we didn’t want it enough yet to actually go through with it. I was still her brother, and things like putting my penis in her were still off-limits even if her certainty that it was only a matter of time weakened my resolve somewhat. There wasn’t nearly as much of a point in trying to delay the inevitable as there was in working against something we could potentially stop.

Katie giggled softly. “You’re getting hard again,” she said.

I looked down to check, though I had already felt it starting to happen. Who was I kidding anyway? I could tell myself all I wanted that I just wanted to look at my sister, maybe touch her a little, but I honestly doubted I had the self-control to prevent it from escalating.

In a brief moment of clarity I realized the same thing Katie had. Sooner or later we’d be in a situation where we’d both be horny, and probably naked, and not thinking straight, and we’d do something stupid unless we stopped what we were doing altogether and somehow went back to a purely platonic relationship, but I couldn’t see that happening. If we knew where we were headed, it might actually be better to go in with that knowledge than to try and deny it right up until the end.

“Of course I’m getting hard again,” I said. “That tends to happen when there’s a beautiful, naked girl around.”

“I bet it does.”

She reached out and gently grasped my cock in one hand, stroking it as it became fully erect. Her soft touch felt amazing and for a few minutes I just sat back and let her toy with me.

“It’s probably not good that all it takes is a little compliment to get me to do this,” Katie said.

“I’m pretty sure there’s more to it than that,” I said. “I know I’ve complimented you at least once or twice before and it’s never made you grab my dick.”

“True. Guess I’m extra horny today or something. I might need to find someone to take care of that for me.”

I grinned at her less than subtle hint. “I think I know a guy for that.”

I squirmed closer to her until we were right next to each other while Katie continued slowly stroking me. I placed a hand on her upper thigh and carefully maneuvered it toward her pussy, giving her plenty of time to let me know if she didn’t want it even though I didn’t think that would be an issue.

Her hips rocked back encouragingly against my fingers as they drifted closer to the place she really wanted me to touch. Her skin was so warm and smooth, then suddenly wet as I reached the slit of her pussy. She obviously hadn’t been lying about how horny she was.

“That feels good,” she breathed. “I need more.”

My finger were only lightly moving up and down her pussy lips, a teasing touch rather than the more focused attention she craved. It was kind of mean in some ways, but I loved seeing the desire in her for me to give her what she wanted.

“What do you want me to do?” I asked.

She stared straight into my eyes. “Put your fingers in me,” she said.

“You sure?”

I pressed a single finger against her opening a couple times, but not with enough pressure to actually penetrate. She squirmed each time I did it, as though maybe she could make me accidentally slip inside, and eventually resorted to pouting at me.

“Don’t tease me,” she said.

“Sorry,” I said, only half meaning it.

I faked her out a couple more times until she looked about ready to start whining, then abruptly pushed a finger inside her extremely wet pussy. All her frustration vanished instantly from her face and she let out a long hiss of pleasure. I thrust in and out of her a few times, then added a second finger.

“Mmm, yeah. That’s better,” she said.

It would have made a rather interesting scene for anyone happening upon us just then. Both of us naked, me busy fingering my little sister, her with her hand still gripping my cock but no longer paying enough attention to it to keep it moving. It was almost funny how much it would probably freak out anyone who knew us, yet somehow didn’t feel nearly as strange as it should have to me. Part of that, though, was almost certainly just me being turned on and not thinking clearly.

Katie was getting more and more into it the longer I went. Her body gyrated in perfect synch with my fingers’ thrusting and her breathing was ragged, not to mention the cute, involuntary sound she made every time I thrust into her a little harder. She alternated between closing her eyes entirely and looking directly at me, and every time I met her gaze she shivered in a barely perceptible way. I was pretty sure she getting overwhelmed by what she was letting her big brother do to her.

All of a sudden she sat up and dislodged my hand from her pussy. She tried to push me onto my back, but I initially resisted.

“What are you doing?” I asked.

“Just go with it,” she said. “It’s something I’ve never done before, but I want to try it with you. Don’t worry, you’ll like it.”

I was a little skeptical, but at the same time there were very few things she could be up to that I wouldn’t like. She pushed me again, and this time I let myself lie back to wait and see what she would do.

She swung her leg over me to straddle my chest facing away from me. It put her ass really close to my face and I could see her pussy poking out from underneath her too, so I pretty much okay with her choice of seat. When she leaned down toward my cock I realized it was only going to get better.

The first thing I felt was her warm breath on my erection. It wasn’t quite the same stimulation as her hand had been, but somehow it might have even been a more erotic feeling. Just knowing how close my baby sister’s face was to my cock made it twitch in response.

After a moment of anticipation that no doubt seemed longer than it was, the very tip of her tongue made contact with the head of my cock and licked a small path across it. She repeated the action several more times, using more and more of her tongue each time. I groaned out loud when she licked from the base of my shaft all the way up.

“Fuck that feels good,” I said.

Katie turned to look over her shoulder at me. “I thought it might,” she said. “Maybe you could return the favour.”

As she turned back around, she also slid her butt back until her pussy was directly over my face. She then resumed where she left off, lowering her mouth back to my cock and this time taking it partway inside instead of just licking. The softness of her lips and the warm wetness of her tongue made for an amazing combination of sensations over the length she’d taken in.

I put my hands on her hips and guided her pussy down to my mouth, to the point where she was very nearly sitting on my face. I decided not to try anything fancy or tricky, and simply stuck out my tongue to lick the length of her wet slit. She moaned around my cock, and I privately agreed with the sentiment. I was well aware that sexy was not a flavour, strictly speaking, but that was exactly how my little sister tasted to me.

I eagerly licked Katie’s pussy over and over while she continued to take care of me on her end. My technique no doubt wasn’t as great as it could have been with a little more effort and concentration, but I could tell I was getting results anyway. Her body wasn’t particularly good at keeping secrets from me in that respect.

My sister was getting noisier and generally wiggling around more and more with every passing minute. Luckily there was no one around whose attention we might attract, plus some of her sounds produced some very interesting vibrations around my cock. It was hardly the sort of thing I wanted to discourage for the moment.

Together we built each other up to the edge of orgasm, our mouths and tongues working frantically toward our mutual goal. I was rather pleased with myself when Katie came first, moaning loudly and bucking her hips against my face to inadvertently spread her pussy juice all over my lips and chin.

I came shortly after that with Katie’s mouth latched firmly onto my cock. Evidently she didn’t mind swallowing my cum, which was simultaneously very wrong and extremely hot. I kind of wished I could have watched her face as she did it, but I wasn’t about to complain.

My sister eventually got off of me and repositioned herself next to me. Her hair was kind of a mess, and was a trace of what I suspected was my cum on her bottom lip, but mostly she just looked extremely satisfied.

“Mmm, I think I liked that,” she said as she stretched out. “We should do it again sometime.”

“You really think there’s any chance we won’t?” I asked.

“No, not really. We’re beyond hope.”

“Heh, yeah. Something like that. Anyway, we should probably head back at some point.”

“Mm-hm, in a minute.”

Despite her agreement, Katie didn’t make the slightest effort to move from where she lay. I supposed we weren’t really in any rush, so I got more comfortable where I was and settled in for a while. We’d head home eventually, when we were ready.


When I woke up the next day my first thought, perhaps unsurprisingly, was of Katie. All those years we’d been living together, and now I couldn’t stop thinking about her or wanting to be around her. I supposed that was probably a common effect of developing a sexual relationship with someone, even a sibling.

I went to her room almost as soon as I managed to pry myself out of bed. She appeared to still be asleep, and for a few minutes I just stood and watched her. I’d always loved her, she was my sister after all, but somehow it was different now. There was more of a need behind it, and a desire for physical contact that I didn’t think was entirely sexual. It was hard to know for sure when my thoughts kept returning to the image of her naked body from the day before and interrupting any deep self-analyzing I might attempt.

“Some girls might think it’s a bit creepy the way you’re just standing there while I’m sleeping you know,” Katie mumbled.

She still hadn’t opened her eyes, at least not so that I could tell, so it was hard to know how long she’d been awake.

“And what do you think about it?” I asked.

“I think it’s kind of cute,” she said.

She sat up with a slight groan and grinned at me. As she did I noticed that the shirt she was wearing didn’t appear to be one of hers.

“Is that my shirt?” I asked.

“Maybe,” she said.

“Where did you get it from?”

“From your room, duh.”

In reality I supposed my question was more along the lines of when and why she had taken it. The most likely scenario was that she had snuck it out sometime during the night while I was asleep. That scenario was also the most intriguing since I wouldn’t exactly mind having her sneaking into my room at night given the current circumstances of our relationship.

When Katie stood up her legs were completely bare, and she may well have been naked except for her stolen shirt which came down to the top of her thighs. I instinctively moved toward her but she stopped me with a casual gesture.

“Ah ah,” she said. “It’s too early in the day for you to start messing around.”

“It’s never too early,” I replied, but I still backed off.

“Okay, let me get changed and then we can figure out what we’re going to do today.”

“As if you don’t know.”

“I really don’t. I make a lot of stuff up as I go.”

“I’ve noticed.”

“Mm-hm. Anyway, could you leave while I get changed? Or at least turn around or something.”

I looked at her questioningly. “Really? You don’t want me to see you changing even after yesterday?”

“Right,” she said.

I rolled my eyes and turned around so my back was to her. I listened as she rummaged through her clothes and chose a suitable outfit, until finally I heard what sounded like the removal of her shirt. As soon as I was reasonably certain she was naked I turned back around.

“Should have known you’d do that,” Katie said, just before slipping a new shirt over her head. It appeared to actually be hers this time.

“Of course you should have,” I agreed.

I hadn’t been about to pass up another chance to see her naked, and even with the shirt on she was still temporarily bottomless, which was uniquely intriguing in ways full nudity wasn’t. All too soon she pulled on a tiny pair of shorts and was more or less properly covered, despite the lack of any underwear.

“That’s kind of a dangerous outfit for you to be wearing,” I said.

“Why, ’cause you can get your hands on me easily?” she asked as she stepped closer to me. “Maybe that’s the idea.”

As she tried to move past me I grabbed her arm to keep her from leaving. She attempted to shake me off, but I held on.

“Lemme go,” she said. “I’m hungry, I need breakfast.”

“And what if I don’t let you go?” I asked.

“Then I’ll be very annoyed at you.”

“Really? Because what with you being psychic and all I’d have thought you’d already know what’s coming,” I said, just before pushing Katie back toward her bed. “And if you did you’d already be annoyed.”

“Or maybe I lied and this is exactly what I wanted,” she countered.

We stared at each other in silence for a few seconds, then at the same time we moved toward each other and ended up falling together on the bed. At first I did little more than hug her to me, loving the feeling of having her in my arms and knowing that it might never be a completely platonic position for us ever again.

Katie meanwhile was roaming her hands freely over my body and eventually up to my face. It wasn’t exactly a surprise when she held me still so she could kiss me, but at the same time it sort of was. Despite the way I’d recently been feeling about her, she was still my sister and therefore being kissed by her was a somewhat strange feeling. Stranger, somehow, than her sucking me off, or me licking her pussy. Admittedly, my brain was not always a completely rational place.

“You know how I said we were gonna have sex?” she whispered in my ear. “And remember how I said it might be months before it happened.”

“Yeah,” I said.

“I might have been wrong about the timing.”

Then her mouth was on mine again, communicating all the same love and need to me that I felt for her. I kissed her back and ran my hand through her hair, holding her face close as though there was a chance she was going to back away. It would likely have taken something along the lines of a nearby explosion to separate us.

All the while my cock had been getting harder and harder until I could feel it pressing and rubbing against Katie’s crotch. If not for the clothing between us I might have already succeeded in penetrating her, and I wasn’t even at full erection yet. However, the thought of being inside my little sister did hurry it along. It was unbelievable how much I wanted it.

I wasn’t entirely sure which one of us started it, but before long we had begun the process of helping each other out of our clothes. It took far more time and effort than it should have, due to both being in an awkward position and dealing with excited, fumbling fingers, but the process itself was enough fun that neither of us really minded the delay.

As soon as I got Katie’s shirt off I shifted my head down so it was more in line with her breasts. I kissed them a few times, alternating between them more or less evenly, before sucking one of her nipples between my lips. She seemed to like it, but didn’t let me play very long before she aggressively resumed trying to get us both naked. There wasn’t much left to go, but her shorts had become tangled around her ankles thanks to me being in the way and preventing her from just kicking them off.

I attempted to move further down her body as I helped her with her shorts, but she wasn’t having any of that. She pulled me back to our original position, once again kissing me forcefully, and this time there was nothing between us. Nothing at all to stop my cock from making contact with her pussy.

“I want it in me,” she whispered.

“I think I could manage that,” I replied in the same hushed tone.

Most likely I could have just started fucking the shit out of my sister right there, but I took it a little slower than that. It was our first time together after all, it wouldn’t hurt to keep things a tad on the gentler side. I couldn’t imagine that we wouldn’t get the chance to experiment more in the future.

I rubbed the head of my cock up and down her pussy while she nuzzled my neck and purred encouragement for me to go ahead and do it. No doubt if she got impatient enough she’d take over and make me, but I didn’t let it get to that point. When it felt right I simply stopped holding back from penetrating her and let my cock press against my little sister’s tight entrance until it slipped inside.

Katie hissed in pleasure as I slowly pushed my way in, her pussy gripping me fiercely when I tried to pull back even a little. She didn’t seem to want me to gradually thrust my way as deep as I could go, she just wanted me in there.

“Relax a little,” I said. “It’s gonna make things tricky otherwise.”

“Sorry,” she said. “I just like feeling you inside me.”

As if to apologize further her lips brushed mine softly, barely touching, then abruptly with more passion. Her hips rocked against me in small but increasingly forceful motions, and her hands pressed against my lower back. Her rhythm gradually caused my body to respond all on its own, and soon I was thrusting inside her almost as deep as I could go.

The feeling of having sex was amazing all on its own, but the knowledge that the girl in this case was my little sister made everything so much more intense. I couldn’t think about the hands on my back, or the breasts pressing against my chest, or the pussy wrapped around my cock without also realizing that they all belonged to Katie, and that exactly none of what I was doing to her was appropriate brotherly behaviour.

All of a sudden she tried to push me away, which confused me to no end, but I let her do it anyway. She must have caught the obvious confusion on my face because she smiled reassuringly before rolling over.

“I’m not going anywhere,” she said as she raised herself onto her hands and knees. “Just changing positions.”

“Oh,” I said, trying to hide just how relieved I was. “You could have said so.”

“Yeah, well, it made sense in my head. I was just gonna, like, flip over and then we’d keep right on going.”

She wiggled her butt at me in case I hadn’t been given enough of a hint. I was quick enough on the uptake to already have repositioned myself behind her and lined up my cock with her pussy. It somehow felt even dirtier to be approaching her from that angle, even more wrong, and maybe that was the point. Maybe Katie just wanted to revel in the wrongness of the situation. If so, I wasn’t about to protest.

“You’re bad, you know that?” I said as I started fucking her again.

“Mm-hm, I do,” she said, then groaned as I thrust into her a little more vigourously. “I can’t help it. When I was thinking about how this was gonna happen, imagining what it would be like, this was almost always how I saw it. You behind me and fucking me like you don’t even care that I’m your little sister. It’s so… hot.”

“I don’t know, I almost think it’s hotter that you are my sister.”

Katie looked back at me over her shoulder and smiled, just before losing her balance and falling forward onto her elbows. It left her butt sticking up higher than the rest of her body in an even more wanton pose, as if that were possible.

“Well you better do a good job back there… big brother,” she said, emphasizing the last two words.

“Wouldn’t want to disappoint my baby sis,” I agreed.

I loved the feeling of being complicit in something so important with Katie, of being on exactly the same page. Despite any possible outward appearances to the contrary, there was obviously a level of trust between us greater than even I would have guessed. The fact that we could be so free to admit to getting turned on by something we had no business even thinking about was incredible when I really thought about it.

It was right around then that a brand new level of determination set in; I was going to fuck my little sister until she came and nothing was going to stop me. Granted that had more or less been the plan anyway, but now it was official.

Whatever Katie’s next words were going to be dissolved into incoherent mumbling with the occasional soft moan as I gave up on being gentle and started fucking her hard. I knew there was a small chance that I could end up being too rough and possibly hurting her, but I also knew she wouldn’t hesitate to yell at me if I did something too painful. It wasn’t much of an issue anyway, because all indications were that she was loving it.

“Mmm… keep… doing… that,” she breathed in between the sounds of my hips pounding against her ass.

We were both out of control, possessed by lust and unburdened by rational thought. Despite how hard I was already fucking her, Katie was slamming her butt back toward me in time with my strokes. She was obviously too horny to care about being sore afterward, or much of anything else for that matter.

Before too long our combined effort was rewarded, and I felt her cumming on my cock. Her pussy spasmed around me and squeezed tightly at irregular intervals. I was happy I’d managed to make her cum first after all, because I knew my own orgasm wasn’t all that far away. There was only so long anyone could last while fucking, or being fucked by, their sibling for the first time. That was my reasoning anyway.

As I continued pounding on Katie’s pussy, she gradually collapsed forward into the bed until she was basically lying flat with her butt sticking up a little. It was making things kind of awkward for me as I was forced to compensate by adjusting my position, but I was getting close enough that I just ignored my protesting muscles and kept fucking her.

With every stroke I felt my orgasm getting closer and closer until it was finally upon me. I had enough presence of mind left to pull out before cumming, but only just barely. Since I had no time to aim anywhere else, my cum shot out all over Katie’s butt and lower back, making a sexy mess of her bare skin. When I was done it took all my remaining energy to roll off of her instead of collapsing where I was.

Katie rolled onto her side facing me and curled her legs partway toward her stomach. She had something of a disheveled look to her, but mostly she looked happy. She watched me through half-open eyelids and gave me a contented smile as I recovered. To me, she’d never looked more beautiful and I couldn’t possibly have doubted at that moment that I loved her. More than anything else in the world, I loved my little sister.

Her smile grew wider for a second, as though amused by some passing thought.

“Love you too,” she whispered.

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crumpet wrote

awsome story it was brilliant