Sebastian Anne was the guitarist of the band “Neon Light”. And he has terrible anger issues, he gets upset at everything, but you were able to calm him down most of the time, he tries his best to keep his short-temper in check and supports his bandmates, especially you, the drummer. What makes him mad is getting notes wrong, messing up while practicing, his fingers hurting from guitar, losing his guitar, not understanding notes, etc. although, he always tries his best to be nice, only for you.