As I parked my car in the driveway after getting home, I could see signs of someone still being up. The living room light was on and there was the occasional flicker from the television. Amy probably, she was the only one I could expect not to be in bed as late as it was.
I had fairly odd hours at the job I worked. I started my workday in the afternoon and didn't get home until after midnight most of the time. My days off were very rarely on the traditional weekend either, tending to be more in the middle of the week instead. This meant that, despite still living at home, I could go days without actually seeing my parents or sister. It made my social life pretty difficult as well. I liked the job though, and I didn't mind a little solitude. Maybe someday I'd make it onto a more 'normal' schedule, but I wasn't too concerned about it.
After getting inside the house and kicking off my shoes I peaked into the living room to confirm it was my eighteen year old little sister curled up on the couch. She looked asleep and I quietly turned away toward the kitchen, trying not to wake her.
"Mom left a plate of food in the fridge for you," Amy mumbled before I could even take a step.
Not asleep after all.
"Thanks," I called over my shoulder.
Mom was usually good about leaving me something to eat and I probably would have checked the fridge even if Amy hadn't said anything. I took a couple minutes to heat it up in the microwave and grab a drink, after which I returned to the living room.
"So what are we watching?" I asked.
I sat down on the couch beside my sister, taking advantage of the coffee table to set my food on. I didn't recognize whatever show, or movie, was on the tv, but from what little I'd seen the plot didn't look overly hard to follow.
"I dunno. There's this guy who killed some other guys. Now these two guys," she said as she pointed at the screen," are looking for the first guy. I think."
I smiled at her description of events and watched for a couple minutes as I ate. Amy was clearly tired but was trying not to show it now that I had joined her.
"You know you don't have to stay up and wait for me," I said.
"I know, but I hardly get to see you if I don't."
"Don't get me wrong I like having some time together, but I don't want you exhausting yourself for it."
"Oh I'm a little sleepy, that's all." Amy sat up straighter and stretched. "Just need something to wake me up."
I hadn't finished eating, but that was alright. I knew what my sister was up to and, despite my concern for her well-being, I had been looking forward to it.
Amy and I had a somewhat different relationship from what anyone else knew, a relationship modified by our time spent together in the middle of the night. As far as we allowed other people to see we were purely a brother and sister with all that entailed. But we had our secrets.
I watched as Amy stood and walked slowly past me to the light switch on the wall. She continued stretching as she moved, only for show now as she made sure to pull her shirt tight across her chest for my benefit. Soon the room was dark except for the faint light emanating from the tv. Sometimes she would leave it on to give us the small amount of visibility it provided, but only sometimes. She found the remote on her way back and with the press of a button all the light in the room was gone.
It wasn't completely dark or anything. There was still the moonlight from outside which was enough that we could make out some basic shapes, but that was about it. This was how Amy preferred it, and I didn't disagree. The darkness gave a sense of comfort, a protection from the prying eyes that existed only in our imaginations. We weren't hurting anybody but we had no illusions about what kind of reaction we'd get if anyone ever found out.
Amy knelt in front of me and I scooted forward a little on the couch. Her practiced fingers were in my pants and extracting my cock quickly and with hardly any difficulty despite the lack of light. She had done this enough times it was second nature.
"So did you jerk off last night?" she asked.
She hadn't stayed up last night, leaving me on my own. I didn't mind that much in some ways since I really did want her to get the rest she needed, but I still felt disappointed every time I came home and didn't find her waiting for me.
"Nah, it's not the same doing it on my own," I said. It was more or less the truth.
"You just like getting other people to do everything for you."
"I do when they're so good at it."
I could sense Amy's smile even if I couldn't see it. She wasn't hesitant about fishing for compliments and I didn't mind giving them. Besides, she really did do a good job and the last thing I wanted to do was discourage her.
My cock was coming alive in her hand even though she wasn't yet doing much more than just holding it. I sometimes wondered how I would find it if I could see more of my sister while we did this, if she took her shirt off or something. It probably would get me harder faster but it would almost certainly be at least a little weird at first. Plus it would mean pushing the unspoken lines that we both did our best to stay inside.
Despite the lack of visual stimulation I did gradually become fully hard as a result of my sister's touch and what I knew was to come. Amy probably was legitimately better than I was at getting me off at this point, all the nights of practice having paid off. Part of that was just the feeling of someone else's hand doing the work, not to mention a distinctly female hand. I couldn't manage anything that compared to that sensation.
I groaned softly as she started stroking me, her small, soft fingers caressing my sensitive skin. Truth be told she was pretty much the only one who got me off these days. I didn't have a girlfriend or anything and, as much as I joked or avoided really answering the question when it came up, I really didn't masturbate anymore. I preferred letting Amy do it. It was kind of fucked up, and I understood that, but it worked out okay and we both enjoyed ourselves so what the hell?
Something warm and wet touched the tip of my cock, Amy's tongue. It used to be she would use her hands and that was it. At some point that changed and she had started using her mouth as well. Things had remained roughly the same since then, though I knew if she ever tried anything new I would probably let her. That's how we'd gotten where we were now after all.
Amy's lips parted and wrapped around my erection, slowly engulfing it. Her hand still gripped the base, squeezing tighter now and beginning to move in rhythm with her mouth. Strands of her hair brushed me as her head bobbed in my lap and I wanted to brush them back for her. I kept my arms firmly at my sides though since I had to be very careful about touching her. I never knew if something I did might scare her off, even when I was fairly certain she would see it as harmless. There was no telling which straw might break the camel's back.
"Oh fuck Amy," I breathed.
I felt the back of her throat bumping against the head of my cock on every down stroke, it drove me crazy when she did that. Her tongue played over the bottom of my shaft and her fingers were always there to fill the gap when her head pulled back. She kept up constant but varied stimulation on me as she built me up to the point of orgasm.
"I'm cumming," I said, providing what warning I could.
My sister's lips retreated to seal off the very end of my cock while she continued pumping it with her hand. My cum shot into her waiting mouth and I could feel the slight movements as she swallowed it as fast as it came out. She told me that it was easier this way, that it didn't make a mess. I didn't really believe that was her reason but I wasn't about to call her on it.
Finally I was dry and Amy disengaged from me after a couple last strokes to make sure I was done. I got myself pulled together and covered up while she settled back in on the couch beside me, not quite close enough to be touching. There was a lamp on her end of the couch and she turned it on instead of going back to the switch for the main room light.
I could make out my sister's features again, all the familiar details that were lost in the dark. She looked pleased with herself as she often did afterward.
"Amazing as usual," I said before she could even ask. And I knew she would ask.
"Of course it was," she said as though it was a foregone conclusion. She still beamed at the compliment though.
We sat in silence for a few minutes, out of things to say. It felt good just being with her sometimes, just hanging out. It made me wonder how long we'd be able to get away with our relationship in its current form. We rarely talked about it period, let alone what the future held.
"So how are things?" I asked.
"What things?"
"You know, like how's school going, how's life, stuff like that."
