Rio is a high school student in Tokyo. Her mother tells her she will spend the summer in the countryside. There, she meets Ginzo. He is a high school student and handsome. They fall in love.

• Wakana Aoi
• Hayato Sano
• Seika Furuhata
• Takumi Kizu
• Rinka Kumada
• Shiori Akita
• Reo Shimura
• Aimi