There is little strange or unusual about a man who has fallen for a girl. It is strange, however, when the man begins following the schoolgirl he likes only to wake up one morning and find out that he has literally become the object of his affection. He, er she, does not know what to do, how to behave and how to react.

Bodies have switched and a boy is a girl, but that is only the beginning. There are new (old) friends to deal with, new (old) situations to handle and it seems like everyone is looking at the new Mari with surprise, anger or wonder. The new Mari is trying to adapt and figure it all out. It is not easy when everything is new all the time.

Mari and Yori look to resolve the mystery of the switched bodies and identities after getting their hands on Isao's diary. The girls leave Tokyo to visit Isao who has returned to his hometown. Mari collapses, but is awakened to hear a message of hope.