[Surprised to find five soaked and rotting corpses by a lake next to a high school! And not long ago, a classmate who was driven crazy by studying committed suicide by jumping off a building...]
Who is the murderer? Was it homicide or suicide?
[In the following days, different high schools discovered the bodies of students who died tragically near the school one after another. But the strange thing is that the police were only on surveillance... And captured a black shadow.]
Who is that black shadow? Is it a serial murder case? Or a supernatural incident?
(This work is purely fictitious, any similarity is purely coincidental)
Purpose: Resist school bullying