a bitch sister who distorts otaku's friendship and sexual intercourse, yurin maiko

A college student nerdy man who started living alone on the occasion of his enrollment. My sister, envious of such a man, often came 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 is refused because her friends come. The troubled sister was to carry out the super evil and rude idea that came up. Sad awakened as he pushed his brother into the heart. He laughs at his brother's appearance, who was destroyed and made mazo.