Teresa, your step sister.

You had the hots for your step-sister, Teresa, even before you accidently saw her in the bath a week or so after she and her mother moved in. You weren’t used to sharing your bathroom and didn’t think before opening the door and walking in. Ever since, however, her naked body has played a staring role in many of your fantasies. Surprisingly, even though she is a bitch to you most of the time, she never mentioned the incident to either your father or her mother. You are also sure you’ve seen her checking you out when she thought you weren’t looking, although that may be wishful thinking on your part. You now have the power to find out.

You get home and find your stepmother, Liana, making your bed. She is looking as hot as usual and you once again mentally congratulate your father on his taste in women. For a moment you consider convincing her to “help unmake your bed” (it’s not like you haven’t fantasised about it before), but your pretty sure it would take the kind of psychological rewiring that Amy said might break someone since she has never shown any interest in anyone but your father. Plus cuckolding your own father is the kind of action that leads to tragedies of epic proportions. Instead you use your abilities to convince her that she and your father are going out tonight and will be “staying over” at a hotel. She runs off to get changed into something more appropriately sexy and, when your father gets home you convince him of the same thing. By the time your sister arrives home from school (as always just in time for a free dinner before she changes and goes out again) they are gone and you are alone in the house.

“What’s for dinner?” Teresa asks as she walks in the front door.

You take off your sunglasses and walk over to her. “Hey loser” she says “Where is … ?” Her eyes loose focus as she meets yours.

“Teresa” you say

“Yes?” she says.

“Why are you such a bitch to me all the time?”

“Because I’m attracted to you and it makes me uncomfortable.” She says “I try to drive you away so I won’t have to think about it.”

“Why are you uncomfortable?”

“You’re my brother. I shouldn’t ?”

“I’m your step-brother, we aren’t actually related”

“It still feels wrong.”

“How attracted to me are you?” you ask.

“I think about you when I masturbate, even though I don’t want to. No matter what guy I’m thinking about when I start at some point he turns into you and instead of turning me off it makes me even hornier and I usually cum soon afterward. Even though it makes me feel ashamed I can’t help it.”

“What sort of fantasies do you have about me?” you ask.

“Sometimes I remember that time after we had just moved in when you walked in on me in the bath. In my fantasy, however, instead of apologising and backing out you offer to wash my back and end up washing way more than that. Sometime I imagine you catching me touching myself and offering to help me finish and sometimes I fantasise that I catch you and help you finish. Both of those usually end up with your cock in my kitty.”

Just hearing her describe her fantasies is making you hard. You really want to make these fantasies a reality, along with a few of your own.

“Teresa” you say “I want you to stop feeling guilty or ashamed about your sexual feelings for me. You will remember that we are not related and that any desire for me you have is natural and not incestuous. Do you understand?”

"Yes" she says.

"Good" You say "Now once you awaken you will call whoever you were planning on going out tonight with and cancel your plans. You will make any excuse you need to. Understand?"

"Yes"

You break eye contact and she takes out her phone and calls her friends. As she makes her excuses about why she can't go out tonight (feeling sick. Probably something she ate) you think about which fantasy you want to start with. Once she finishes you 'put her under' again.

"Now for the rest of the night you will feel and react as if what is happening is a sexual fantasy or an erotic dream rather than reality. Understand?"

"Yes"

"Also for the rest of the night everything will feel more pleasurable that it usually would. You will also orgasm more easily, more quickly, more often and more intensely than you ever have before."

"Yes"

"O.k." you say "Let's start with ...