[Itaba Hiroshi] Imouto Button (Kirai=Suki) [ChoriScans]

Mika beats her big brother at a video game and claims her prize: his lap as a chair, her freshly bathed body dripping against his while their parents are out at a community meeting. The teasing punishment melts into something neither can undo—fingers wandering between her thighs, big breasts bared, and a climax timed to the final boss's defeat. Once the controller drops, he takes his wet little sister properly, sweat-soaked and moaning, as the siblings cross a line that feels far too good to regret.