Before I could sell my adolescent sister who attends an idol training school, I trained her to have sex with her nipples and a big dick for 3 days without her parents.

Nagi was devoting herself to attending lessons at a training school every day with the aim of becoming an idol. One day, her parents say they will be away from home for a few days, and her older brother, Yuzuru, is alone with her. Yuzuru is an otaku and views her younger sister Nagi with special feelings that are different from her brother and sister status, and she engages in perverted acts such as secretly taking pictures of her pantyhose so that Nagi won't find out, and licking the mouth of her younger sister's juice, making her a sexual object. Taking advantage of the absence of her parents, her perverted behavior escalates... My younger sister, a meaty masturbation idol, is corrupted by her nipple development and big cock appeal.