Heart Hibakaseron

A high school student named Izumi is invited by a friend to attend a live music event for the first time. When she presents her ticket, she is denied entry because she is still in junior high. She then encounters an unpleasant man, and during the concert, she is unable to connect with the music. Feeling disheartened, she is unexpectedly approached by the same man who offers an apology. A romantic connection begins to develop between the venue manager and the young high school girl.