HS Girl

A background character in Season 1 and Season 5.

Season 1
Episode 6

A random passerby. On her way home with a classmate, a person she recognized as an extra from a movie tries to shill BCW (which the boy mistakes as BLACKED Championship Wrestling) to them as an all new and special wrestling promotion backed by a powerful financial institution, and fails miserably at doing so as they walk down the road to see TFR.

Season 5
Episode 3

She returns as a fangirl for the TV World Fools, wanting to get Nero's autograph backstage. When she finds Adachi Tohru and rejects wanting his autograph and calls him a burden on his partner, he relapses into his killing ways and murders her on the spot.

Later, Tomitake Jirou's corpse would also be found, attributed as another possible kill by Joker.