Hisashi and Mai are set to have their wedding ceremony in three months. Unfortunately, Mai falls ill and lapses into a coma. Twenty-somethings Hisashi and Mai are engaged. When suddenly Mai's heart stops and she falls into a coma all Hisashi can do is remain by her side, albeit without knowing whether she might improve. Things look up when Mai finally comes out of the coma and becomes conscious again, but she has suffered brain damage and cannot remember her man.
Mitsuki is shy and rather isolated at school. Towa is on the basketball team and Mitsuki's class-mate. Due to circumstances, Mitsuki soon begins to socialize with four jocks of the basketball team, which affects her self-esteem, her social status, her loneliness and her life. She finds a new lease in her school life.