[Terasu MC] On the Laptop My Beloved Big Sister Lent Me…

A sweet older sister who games with her little brother and helps him study keeps a filthy secret on the very laptop she lends him—a stash of photos showing herself in sheer lingerie, sweating under a scruffy older man who owns her completely. When the boy stumbles across the images, his innocent admiration curdles into a guilty obsession, and he invents excuse after excuse to borrow her computer just to look again. But she has noticed the missing files, and now she is performing for her lover's camera while her brother faps in the next room, cooing about how the guilt only makes her wetter—and hinting the real show is about to move much closer to home.