MIDA-382 My teenage sister is attending an idol training school, and before she can become famous, I trained her to be a nipple-crazy, big-cock-crazy girl for three days while our parents were away. Nagi Yasaka

Nagi aims to become an idol and devotes herself to lessons at a training school every day. One day, her parents say they'll be away for a few days, leaving her alone with her older brother, Yuzuru. Yuzuru is an otaku and views his younger sister Nagi with special feelings that are different from those of a sibling. He engages in perverted acts with her, such as secretly taking pictures of her upskirts without Nagi noticing and licking the rim of her juice, treating her as a sexual object. When their parents...