13-gatsu no Yuurei

A love triangle between a woman, a man, and a transvestite boy. Neri's twin brother, Kiri, reunited for the first time in three years. He had a face that looked exactly like Neri, and was dressed in "cute" clothes that Neri wouldn't wear. "When did Kiri become a girl?" Neri happens to get acquainted with Kiri's housemate, Suou, while being upset by her younger brother's transvestite appearance. Suou, who is a classmate in the boys' school days, notices the feeling of "more than friends" towards Kiri.