Incest Seduction/Grab Kim's shirt

With a sharp jerk you let go of your dick and reach toward your sister. She squeaks in response and drops her body close to the floor, both trying to protect herself and pull your sweats the rest of the way off. But you were never going for your sweats. Leaning over her back you grab the bottom edge of her shirt just as she pulls on your ankles. Her shirt rises quickly as she pulls back hard, expecting you to resist her. Instead you kick outwards, pushing her into a backwards tumble and nearly ripping her shirt from her upper body. When she comes to a stop in the middle of the living room you realize you are indeed bottomless, but Kim is wearing nothing besides her sultry pink bra.

You sit dumbfounded on the couch by the strange series of decisions that led you to be half naked on the couch with your little sister's shorts in one hand and her shirt in the other. The act of being stripped by and stripping your sister has your cock swelling to full mast and your head swimming with emotions.

"You took my shirt!?" Kim asks incredulously.

"You were taking my pants..."

"Because you took my shorts!" she shoots back.

You notice she isn't looking you in the eye, instead staring full on at your stiffened cock. You sheepishly bring both hands down to protect your dick, sandwiching it with your sister's thin warm clothes. She smirks once her view is obstructed.

"Perv..." she nearly whispers it.

"What?" you reply, confused.

Kim rights herself, standing strategically so as to not expose herself to you. "You planning on jerking off into my panties?"

"What?" you repeat. "You aren't wearing panties."

"Yeah, I got you hard, didn't I?" she continues, taunting you. "Thinking about your little sister like that... you're so bad..."

"You're staring at my dick! I'm hardly the perv here."

Kim turns and retrieves your pants from the carpet while cupping her crotch with her other hand. She takes a step toward you and whips you in the face with your own pant leg.

"Hey, quit it. Just give them to me."

Still smiling, she whips you again. And again. Until you bring up one of your hands to try to shield yourself, partially exposing your cock again.

"Stop it!"

Kim swings your sweats around in the air in a disinterested fashion, glancing down into your lap. "Hmm? What're you gonna do about it?"

She looks downright incredible. Thin yet supple, she softly sways back and forth showing off the finer details of her body. You keep telling yourself that you can spot the nipples adorning her tiny tits through her partially sheer bra, but you really have no idea. But further south a well defined V runs down her pelvis right below her faintly visible abs. For a regular homebody she's somehow in great shape, and nearly all of that shape is on display only a few feet away from you. It's certainly distracting, not to mention making your cock pulse with excitement.

"I'll throw you outside!" you mutter in response.

"Only if you can catch me!" giggles Kim, taking a step back.

What's gotten into her? you ask yourself.

"Well Z? What now?"

She's asking for it. Chase her down.

You can't run after your little sister with a raging hard on. Stay right where you are.