Description: Yoko is happy. She lives a peaceful life with her husband, Masahiko, and their son, Kazushi.But there is one thing she complains. . . . They haven't had sex for a long time.One day, a friend of Kazushi comes to her house. His name is Ryouto. He is handsome and polite.But she doesn't know yet that Ryouto has a secret personality. .