Given - Season 1 Episode 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 tells Ritsuka something about Mafuyu's past that shakes him up. Even then, Ritsuka starts to realize his feelings towards Mafuyu.