시즌 1, 에피소드 3: In order to try to convince Mafuyu to join their band, Ritsuka takes the song that Mafuyu has stuck in his head and arranges it a bit. Mafuyu is a very quick learner and progressing pretty quickly with playing guitar and the band is on a roll as they find out that their first live show is coming up. But then, Ritsuka's classmate Ayano Kasai（Rico Nagase）tells Ritsuka something about Mafuyu's p...