The following content is intended for mature audiences and may contain sexual themes, gore, violence and/or strong language. Discretion is advised. Band member Hoshina wants to do something with music but struggles to write love songs. Recently, his co-worker and a college student, Seto-kun, has been dazzling with purity and… Healing.On a day that Seto-kun is sad and drenched in the rain, Hoshina takes him home and spends the night with him. But the next morning, it turns out that Seto-kun is “younger” than he thought he was…! Hoshina is shaken with regret. Although Hoshina tries to be sincere in his mature and inadequate way, Seto-kun becomes even more in love with him.A dramatic story of age difference x music!