Take a moment to look around

You look around, still kneading your boobs, still blurry eyed. After a moment, you see your sister, sitting on your desk chair asleep.

"Sis," you say, waiting a moment to see if she wakes up. "Sis!" You say louder this time, still with no response. "SIIIIIIIS!" You scream in a new, softer voice.

You sister jumps awake, almost falling off the chair. "Fuck!" She rubs her eyes before looking at her phone to check the time. "Yeah, so I was supposed to be awake when you woke up. I had this whole speech about you wanting a change and how cool this was going to be, but I kind of just turned you into a girl and fell asleep though," she says shrugging, somewhat apologetically.

"But why, and how? Mostly, why?" You ask, perplexed hands still firmly on your chest.

"Well, I wasn't happy with our relationship as sister and brother, and you didn't seem happy either. Also, I got a magic arm band and wanted to try it out. Mostly, though, since you weren't doing anything important, and since Mom and Dad were gone, I figured I'd give it a go," she says.

"Wait, what do you mean you weren't happy with our relationship? What were you planning on doing?" You ask, swinging your legs off the side of the bed.

She looks sheepish for a moment before saying something softly.

"What?" You ask.

"I might have maybe been kind of planning on **** fucking you at some point," she says, looking down.

"You what!?" you say, standing up quickly.

You completely miscalculate your center of gravity and as your sister starts to open her mouth you start to fall over. You can see her eyes get big as you fall over. Before you can hit the ground, your sister catches you in her outstretched arms and you wrap yourself around her in reflex.

After a moment, you whisper, "You're a dumbass, sis."

You feel your ample new chest pressing into hers as you look up at her. "You were always my big sis, you were just too thick to realize it."

You see her eyes widen as you look up at her. She opens her mouth but before she can say anything else you plant your lips onto hers.