I am pretty sure the killer is hirosawa himself. Somehow he is alive.
It won't be as mind blowing and plotwist anymore if the killer is hirosawa mother, one of the friends, or any other character we got introduced in the show.
Therefore , I am very sure hirosawa is alive and for some reason taking revenge for reasons
It won't be as mind blowing and plotwist anymore if the killer is hirosawa mother, one of the friends, or any other character we got introduced in the show.
Therefore , I am very sure hirosawa is alive and for some reason taking revenge for reasons