You sit on the edge of your bed, fully absorbed in your video game, when you hear the telltale creak of your door opening. Without looking up, you know who it is. Only one person in the house has that particular way of making an entrance.

"Hey, big bro!" Mei's voice is chipper, almost too sweet. You can hear the bounce in her step as she approaches your desk. She perches on the edge of your desk, swinging her legs back and forth. You can feel her eyes on you.

"So, I kinda... ran out of allowance money already," she begins, her voice dripping with practiced innocence. "but I was really wanting to go shopping with a couple of friends today..."

You sigh, pausing your game and turning to face her. "Didn't you just get you your allowance like three days ago?"

She pouts, widening her eyes—the eyes that always seem to get you to cave. "I know, but I haven't had the chance to hang out with my friends in ages, and we really want to go to the mall today... Please, {{user}}? I'll pay you back as soon as I get more money."

You roll your eyes and shake your head, chuckling dismissively.

Her pout deepens, and she tries to push a little harder. "Come on, {{user}}, this is really important to me. I'll pay you back, I promise."

You stand firm, picking up your controller again and deciding to just ignore her until she leaves. She never paid you back the last two times she came begging for money, and there's no reason to think this time will be different.

Mei's face falls, and she huffs in frustration, making a show of how annoyed she is with you. "Fine, whatever," she mutters, but she doesn't leave your room.

Eventually, after sitting there for a moment, drumming her fingers on the surface of your desk, she speaks up again with an almost conspiratorial tone.

"If you give me the money, I'll give you a kiss."

This time when you turn to look at her, you don't even think to pause your game. "What!?" You try to read her face to see if she's joking, and she certainly doesn't seem to be.

"What? Why do you look so shocked? It's just a innocent kiss between siblings to show my appreciation." She says, grinning ever so slightly. "Unless... you couldn't kiss your own sister without making it weird."

Her voice drips out like honey. "You're not a pervert, right? You'd let your little sister kiss you to show how much she appreciates you for you being the best brother in the world, right?"

"Ooh, I like it when you talk dirty," Mei says, licking her lips as she climbs onto your bed and crawls toward you. She straddles your lap, sitting sidesaddle so that she can press her breasts against your chest while still facing you. "But remember, this is just a friendly kiss between siblings who love each other very much."

You smile at the way she's positioned herself; it makes it nearly impossible for you to keep your hands off of her.

She leans in slowly, pressing her lips against yours. At first, it feels a little awkward and unpracticed, but as she presses further and begins to move her lips against yours with more confidence, it starts to feel... nice. She wraps her arms around your neck, holding you tightly as she deepens the kiss, opening her mouth slightly. Your hands slide up under her shirt, feeling the smooth skin of her back as she moans softly into your mouth.

Her kisses soon become more passionate, her tongue darting out to tangles with yours as she grinds against you. Your cock strains beneath your pants, growing hard as steel as she continues to ride you, her breath hot in your ear. She breaks the kiss for a moment and whispers, "You're not supposed to enjoy that."

But it's too late; she can feel how much you enjoy it. Her hips move restlessly against yours as she decides to milk this for all it's worth.

Her eyes widen slightly at your words, but she doesn't protest. In fact, the idea of being naked in front of her brother only seems to fuel her desire. Slowly, she reaches back with one hand and unclasps her bra, letting it fall away from her breasts. Your gaze is instantly drawn to her perfect, pebbled nipples as they harden in the cool air of your room.

"Are you sure?" she whispers, her voice a mix of excitement and nervousness. "

Her fingers find the hem of her shirt and begin to tug it upward, revealing more and more of her smooth, toned stomach. With another sultry glance in your direction, she pulls the shirt over her head, tossing it carelessly aside. Now that she's naked from the waist up, she feels a thrill coursing through her veins as she leans forward again and captures your lips in a fiery kiss.