Chapter 9

“Hannah,” my brother said with a serious look on his face, “we’ve got to talk.”

I was in the process of unzipping my dress. I’d been wearing it all day, desperately waiting to get home, take it off, and show my brother the scorching-hot lingerie I’d been wearing underneath.

Not that it was particularly well hidden - the dress barely ended below my red thong, and it showed off my tits quite generously.

Still, there was something so hot about leading a “double life” - no one but my brother knew just how naughty my underwear was each day, and I loved it. Coming home and exposing myself to him was the highlight of my day.

Well, that and the hour-long fuck he always gave me afterward.

I’d been trying to help my brother cum for just over a month now, and the last week we’d been closer than ever. For the last week, he’d fucked me every day - going through several condoms each time - but he’d yet to actually cum from it.

I knew we were right on the verge though. Something was blocking him - we just had to figure out what.

Looking up at my brother expectantly, I let him speak. He’d mentioned once that he found submissiveness sexy, and so whenever we were alone, I kneeled before him to strip.

“Hannah,” he said, “this last week has been great.”

I smiled in response. He wasn’t wrong. I tried not to cum until my brother did - solidarity, you see - but at the end of each session, my brother let me have one orgasm. Letting him control it made him feel sexy, he explained, and so I’d been training myself to cum on command.

Last night, for the first time, I hadn’t even needed any stimulation - after he’d finished fucking me for the second time (no orgasm on his end, unfortunately), I’d knelt in front of him, he’d stared into my eyes, and simply ordered me to orgasm.

It was one of the most intense experiences of my life.

After I came, I sometimes felt a bit of guilt about what we were doing, but it passed pretty quickly. After all, I was a woman, my brother was a man - we were just doing what our bodies were intended for. Women’s bodies are designed to give pleasure to men, and that’s certainly what I was doing - my time spent helping my brother had really taught me a lot about the pleasure my body was capable of providing.

“And I really appreciate your dedication to helping me out.”

In a way, it was quite sad that my brother was the only recipient of my newly-learned knowledge. I’d decided a few days ago that in order to really be committed to helping him out, my brother needed constant access to my body. If there was ever a chance that he could cum, day or night, I needed to be there, each of my holes available for his use.

And so I’d broken up with my boyfriend. It was an obvious decision, but certainly not an easy one. Time spent with him was time away from my brother, and I really couldn’t afford that - what if I was spending the night with my boyfriend, and my brother was able to cum?

The idea terrified me.

No, it was better this way. Any time of the day or night, all he needed to do was call my name, and I’d be there, ready to serve. Some mornings at breakfast, he’d watch me deep-throating a breakfast sausage, and a raise of his eyebrow was all that I needed - a few minutes later, we’d be in the closet, his cock deep in my throat, pussy, or ass.

Yeah, my ass - I’d never had anal sex before, but the second my brother mentioned that it might help him cum, I knew I didn’t have a choice. Everything I do - everything I am - is to help him get off, and he didn’t even need to mention it twice. I walk around all day with my ass lubed up, just in case my brother wants to fuck my tightest hole.

“But there’s something I need to tell you...”

I just nodded, hoping that it made my tits bounce enticingly. I’d started watching my movement a lot these days, trying to make sure that everything I did - every gesture I made, every step I took - would help get my brother hard, so I could help him get off.

God I wanted to help my brother get off. It was constantly at the forefront of my mind - it was the first thing I thought about waking up, and the last thing I thought about before I went to bed. I couldn’t even remember a time when I masturbated thinking about anything else.

I couldn’t even remember life before it held the simple, pure purpose it did now.

“What is it?” I asked, my voice a unique mix of baby-girl and sultry seductress. One night, after my brother had fucked me three times before going to sleep, I’d pulled up his internet history and searched for the porn stars he liked best. As I’d gone around my regular routine the next day, their videos had been playing on my headphones, and I’d been trying to emulate their tone exactly.

I didn’t know for sure if it had worked, but I figured it couldn’t hurt. Anything I could do to turn my brother on more, I did. Anything.

“I’m just worried...”

My heart-rate quickened. I’d done some reading, and discovered that stress was a common cause in difficulties orgasming. As a result, I’d started to do everything I could to reduce my brother’s stress - I still woke him up with a blow-job, but I’d started bringing a cup of coffee with me. My parents hadn’t said anything when I took over his chores, and I’d even started cleaning his room for him.

If my brother had any kind of tension or stress in his life, it reduced the chances of him reaching orgasm, and that was the last thing that I wanted.

“ ... fucking you has been great, but I’m having trouble with the fact that you’re my sister.”

“Of course,” I responded immediately, blushing slightly at his words.

It had been difficult for me, too, but I’d found a simple solution that helped me cope: I didn’t think about it.

Simple as that. When I was horny, it was easy not to think, and when I wasn’t...

Well, I was horny most of the time.

I wondered if other people had started to notice how often I just stared into space with a smile on my face, or the increasing number of mistakes I’d been making in what had once been extremely simple work.

If they had, they hadn’t said anything. And if they weren’t saying anything directly, I frankly wouldn’t have noticed - most of my mental energy was spent on thinking of more ways I could help my brother.

Maybe if I work harder to turn him on, I thought, before realizing that I was already doing everything in my power in that regard. I decided to stop thinking (which was getting easier and easier) and wait for my brother’s solution.

“And so I thought to help with that, you could pick up some costumes.”

Brilliant, I thought, barely able to stop myself from swooning. It was such a simple, elegant solution - my big brother was so smart. So smart, and strong, and manly ... and sexy...

Without thinking, one hand had reached up my dress and I’d started playing with myself, almost drooling as I stared at the outline of my brother’s cock. It was so big ... so beautiful...

And, as I’d proven over the last 6 days, so capable of giving pleasure.

Following my eyeline, my brother smiled as he unzipped his pants.

“Maybe we can start on the costumes tomorrow,” he said, and I nodded enthusiastically, a shockwave of pleasure running through my whole body as his cock came into view.