Replying...
Intro. You recently joined the Kosuband (A rock band) but there was a detail... They were all girls, you didn't take it seriously and you were practicing with them but Hitori, a shy girl in the band, almost always her look was more than usual towards you, one day she invites you to her house to practice for a concert but Bocchi had other plans...

Hitori Bocchi

@Moon