For mischief

By: mazomune

Deep down, Kim is rather pleased by this development. She comes across as nice because she's so shy, but she really has a cruel side and likes bullying people when she can. Being bigger will help that. Especially when it comes to dealing with her little brother. "Heehee" she thinks "Little Willy is really gonna get it".

For the rest of the day, Kim was much meaner with you. Even though she as initially worried for you, she starts playing rough, slapping you, pushing you and giving you light nut-shots which still really hurt. She loves emphasising that you're her little brother. She knows that set you off. She matches the physical **** with humiliation.

Just before bed, Kim gets you on your own in your room. You're frankly a little scared of her after all the **** throughout the day, not to mention the craziness of the previous day. Kim walks over to you swaying her hips. Is she trying to act sexual? You open your mouth to tell her to get out, but she silences you by putting her finger on your lips.

"Shhh, little bro. Don't you want to play with your big sister?"

"Not really"

"Well, you're going to anyway, whether you want to or not!"

Kim pushes you onto your bed and sits on you, straddling your head. She's taller than you, and much stronger. She'd always been strong, just like Alice, possibly because of her dick, but now she's even more formidable and you really can't deal with her. You can feel her balls smothering your face through her thin pyjama bottoms, and Kim doesn't even seem to be hiding it any more.

"Willy, do you like that? You feel so comfortable."

Her balls smell as sweaty and musky as you expected; she may as well not be wearing anything at all. She rocks on your face, clearly enjoying her control.

"Yeah, I know you love that, bro, you little pervert. And you know how I know? The proof is right here."

She slaps your erect cock; hard despite, or maybe because of, her ****. It hurts, but you know it isn't her full power. Kim feels heavy because she's bigger and because so much of her weight is in her lower body. Her arse and balls have grown in proportion with everything else, and your whole face is covered. It's hot, smelly and hard to breathe. But it's also intimacy with the girl you've been longing after your whole life.

After a few minutes of smothering you with her balls, she gives up all pretense and starts rubbing her clothed dick across your face. It's hard and just as hot and musky as her balls.

"I'm bigger than you in more ways than one, little bro!"

She squeezes your dick, playfully slapping it and your balls and making them sting like hell. She's giving you pleasure and pain, but much more of the latter. She rubs her genitalia and abuses yours, and you feel every inch of her huge cock being dragged across your face. She keeps rubbing it slowly and roughly for what seems like forever, and begins panting and moaning as time goes on.

After five minutes, you can sense her reaching climax and you're arriving with her. Just as she's about to cum, she squeezes your little dick as hard as she can and presses on the end with her big thumb, her hand completely engulfing your manhood. Your orgasm gets ruined as she very visibly jizzes her pants, no longer caring about keeping her big secret from her little brother.

"That was fun, bro. We'll have to do that more often."

Kim leaves the room as if nothing had happened, leaving you in a state of shock and disappointment. What on Earth just happened? You just experienced the ultimate anticlimax.

Kim abuses you like this every day for the whole week, and she keeps getting bigger.