Himari and Yuzuru, who live next door to each other, have spent their days like brother and sister due to their family circumstances.Yuzuru likes Himari as a woman, but she hasn't been able to confess to her for a long time.One day, Himari finally gets married.If she misses now, she won't be able to convey her feelings for the rest of her life.Thinking that, Yuzuru takes the plunge and confesses to Himari, but she is dumped.A little while later, Himari came to Yuzuru who was depressed and said. "Do you want to have sex?"