[BAGR-025] A sister who distorts the friendship and propensity of an otaku brother Kokoro Ayase

A college student otaku boy who started living alone when he went to school. The younger sister, who envied such a man, began to frequently go in and out of her brother's room. - A sister who negotiates to rent a room as a place to have sex with her boyfriend, but refuses because her friends are coming. - The troubled sister decides to implement a diabolical idea that she suddenly came up with. A habit called Sade awakened while mentally pushing his own brother. He ridicules the appearance of his brother, whose friendship has been destroyed and made into a masochist.