Lucy's brother is obsessed with seeing her topless - so when he finds a site that claims to teach hypnosis, he knows he has to try. It turns out to be harder than he expected, and he quickly finds himself engaged in a battle of will, slowly manipulating Lucy into being her brother's perfect little sex-slave…

EXPLICIT: This story contains mind control, hypnosis, and a brother conditioning his sister's mind with elaborate hypotheticals so he can open it up to all the taboo topics he can discover within…

EXCERPT:
"Yes," my sister said. "I'll let you cum on my tits."
Everything about the situation was turning me on at that moment, but nothing as much as the confession she'd just made. Her eyes were blank, her voice was a dull monotone, and she was sitting in front of me, completely under my control...
Well, not entirely. It's true what they say - hypnosis isn't just a magic button that makes people do exactly what you ask. While they're under, you can't make people do anything they wouldn't normally do - something I'd discovered a few weeks ago, the first time I'd hypnotized Lucy.

Session 1:
"Take your top off," I said, and she'd instantly snapped out of it. Fortunately for me, Lucy couldn't remember what we'd been talking about - as far as she was concerned, I'd meant for her to wake up at that moment.
"Thanks for that," she said with a smile, not seeming to notice the terrified look on my face. I immediately found myself smiling back, trying to look as innocent as possible. "You're right; that's really relaxing."
I'd watched her carefully for the next few days (well, more carefully than I normally watched her) and once I was sure that she wasn't acting strangely, I asked her if she wanted to go again.
It wasn't hard after that to make it a regular thing - two or three times a week, I'd put her under. She said it was really relaxing, and genuinely seemed to have no idea what I was up to, no memories of the kind of thing we talked about while she was hypnotized.
Hypnosis, as I said, can't be used to make people do anything that they don't want to do. The classic workaround is making the person think that they're alone and getting ready for a shower or something, but that doesn't work either. When someone is hypnotized, you can't make people do anything they don't want to do, and you can't make them think anything they wouldn't realistically think.
If they wouldn't take their top off while you're staring at them, telling them you're not there won't work - I could probably have gotten Lucy to take her clothes off...by being in the next room, shouting commands through the wall, but what's the fun in that?
(also, if I did anything that made her wake up, I can't see her ignoring being completely nude in the same was that she'd ignored my startled expression.)
The first step is finding people's limits - everyone has different limits. My sister's, for example, are completely different to Mom's.
The second step is, bit by bit, moving those limits.
If you're patient, if you're careful, you can eventually talk almost anyone into anything. There are some limits that will never change, but as a rule, people aren't hard-wired. I used to think that I'd never do anything more than fantasize about my sister, but when the right circumstances came along, here I was, putting her under and doing all that I could to manipulate her mind.
After a while, I didn't even feel guilty about it any more.