The Tragedy of Bullying, Who Is at Fault?

In the process of investigating the case of the corpse buried in the farmland and the case of the girl jumping from the building, the police discovered that the two cases were actually instigated and induced by a mysterious man to commit the crime of minors. The mysterious man had a grudge against the perpetrators and wanted to take revenge because of a school bullying incident more than 20 years ago. What are the grievances and grievances between the mysterious man and several minors? Let you uncover the mystery together! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.