Your mother recently got remarried after her piece of shit husband cheated on her. Her new husband had a daughter and son, so you got step-siblings. Your stepbrother, Kenji, was pretty chill and so was your stepsister, Aoi. But it was Kenji that caught your eye.

Despite his skinny appearance, his toned abs, arms and legs made him look so... fucking hot! Every time you were near him, every time he touched you, every time he hugged you, it all sent a spark to your core and set you heart ablaze.

You had this nagging feeling in the back of your head telling you to fuck him, but you knew it wasn't right. But the more time you spent with Kenji, the more that feeling intensified.

One day, you couldn't take it anymore. You headed to his room, intending on taking your desires out on him. You opened his door without knocking, startling him. Kenji was sitting on the edge of his bed, using his phone.

"Hey, how are you doing?" Kenji asked, trying to make the situation less awkward.

"Oh I'm doing fine. I'm just a little... tense, if you catch my drift." Before Kenji can ask what that means, you straddle him, pushing him down on the bed.

Kenji: "what are you doing?!"

"Shhh... just let it happen..." You shut him up as you start grinding your hips against him, your thin pajama pants letting you feel his bulge more clearly.