I watched Colleen gently smooth her new dress around her trim fashion model figure. I couldn't believe this beautiful woman was newly feminine, newly unashamed of her body, and right here in my house every day. Colleen tugged at the cuffs of her sleeves, then ran her hands over her breasts and belly. She did that last in a way that, I think, she never intended to be sexual, but from my newly gorgeous sister, it was anyway.
"Like what you see, baby brother?"
"Yes," I said. "I do."
"Ah, ah, ah," Colleen said, waving her finger at me in mock scolding. "Be careful when you say that phrase. You never know what trouble it can make for your life!
"I think I can say 'I do' to my sister without too much risk," I said, though I thought to myself, She's already mine. She just doesn't know it yet.
Colleen paused with her finger in the air. For a moment, she looked like she'd forgotten how to move. Then she swallowed deeply, with a face suddenly mixed of lust and terror. I'd made several changes to her in quick succession, changing her looks and stripping away her shame about her body. Had I done her some kind of damage?
I hoped not. Thanks to my magic ring, I'd made several external changes to my sister's body, but only to bring out the sexy woman she'd been trying to conceal for years. I wanted her, not what I could make her into. That's it, I decided. No more magic on my sister until I know its long-term effects.
But, that said, I wasn't above making use of the changes I'd already made. I didn't know if Colleen was scared of me, or of the feelings I stirred in her suddenly shame-free soul, but either way, they stemmed from the fact that she was a beautiful woman, and I was a not unattractive man.
I stepped forward, to a point Colleen would have previously considered just a hair too close.
"I can say that to you safely, can't I, Colleen? I think a brother can control himself around his sister."
Colleen just stood there silently.
"Don't you agree, Colleen?"
She nodded, her eyes wide with fear even as her breath fluttered with lust.
"For example," I said, "I think I could control myself just fine if I did this." I reached out and put my hands on her hips, drawing her closer to me. Not too close, not yet. I didn't want to startle her.
Colleen didn't resist me as I pulled her one step closer, then another. I went ahead and closed the gap between us, pushing my pelvis into hers.
It took my sister a moment, but then her eyes got wide as she realized we were standing with our crotches pressed together. I knew she could feel my sudden raging erection through my jeans and her dress. I took my hands off my sister's hips and slipped them around her waist. Anyone watching us would recognize this as a lover's embrace.
Still my sexy sister Colleen did nothing to break away from me. I don't know whether the lust or the fear was driving her, but either way, it kept her paralyzed in my arms.
"I think I'm controlling myself just fine, big sister. Don't you?"
"I do," she said, in a fluttering, husky whisper.
"Oh! Really? Who's saying the dangerous words now?" I slid one arm up my sister's spine, over her bra strap, and up between her shoulder blades, pushing her close to me. Her firm, full, natural breasts felt warm and strong against me.
"I won't..." Colleen had to stop and clear her throat before she could finish that sentence. "I won't let you take advantage of me, Joey."
"Am I taking advantage of you, sis?"
"I think you are." Though she wasn't resisting me at all, her arms still hung limp at her sides, and I was the only one making the effort of this seduction.
"But you're my big sister. You've been my protector all my life. How can a weak, scared baby brother take advantage of the big sister who taught him how to tie his shoes?"
"I think you're losing control, Joey."
"On the contrary. I think I'm more in control than I've ever been in my whole life."
"Brothers aren't supposed to get turned on by their sisters."
"And sisters aren't supposed to flaunt their bodies for their brothers. I think you broke that contract first, Colleen."
My sister opened her mouth to argue, but realized I was right. Of course, I thought, you have no way of knowing I made you turn me on.
I leaned into my sister, pressing my whole torso into hers, and putting my face alongside hers. "Colleen," I whispered. "Colleen. Sister. Lover. Colleen, my heart, my joy."
She trembled in my arms, terrified but too aroused to stop me. "What?"
"Do you find me attractive?"
"No," she whispered.
"Do you want me to kiss you? Do you want me to make love to you?"
"No." This time it was almost more of a whimper.
"Okay. Then stop me."
I pushed Colleen back against the wall, and planted my lips on her full, rich, plum-colored mouth. She did nothing to stop me. I let my tongue explore her mouth, and my hands explore the contours of her body. Though she was older, we were the same height, and I could kiss and stroke and rub her without having to stretch or stoop at all. I rubbed roughly against her body, essentially dry-humping my sister against the wall
For several long moments she stood limply, letting me use her body as my plaything. Then she opened her mouth, raised her hands, and started to...