Ririka Shirasaka, a classmate who is an inconspicuous but beautiful girl and an honor student.Yankee high school boy, Kijima Issai accidentally finds out about her secret. The secret is that 'I'm making a dress for her parents' snack bar'. Ichisai prepares for the end of her school life, but she seems to have a secret...!?The curtain rises on the story woven by the two opposites in their costumes!