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 past that shakes him up. Even then, Ritsuka starts to realize his feelings towards Mafuyu, and...
Oh, I know. Why not write 
lyrics about past relationships?
Was hältste hiervon …?
Ah, che ne dici di parlare 
delle tue esperienze d'amore?
Ah, e sobre relacionamentos passados?
О, знаю. Напиши о своих
прошлых отношениях.