Chieri, a female teacher, secretly fell in love with a student named Shinji. It was a platonic relationship with her, "I won't do anything until I graduate," but the breakup comes suddenly. The woman that Shinji's older brother Shinichi chose as her marriage partner was Eri. Sensing something, Shinji approached Chieri, but she didn't say anything. And after several months, Chieri loses her smile with each passing day. And Shinji, unable to see Chieri like that, makes a certain "decision"...
