Premeditated Assassination

The police speculated that the murderer was a serial killer who had violent tendencies and would exhibit extreme antisocial behaviors when provoked by outside factors or when the person became mentally unbalanced.

Was that really the case, though?

The boy did not think so.

Prior to the assassination, the murderer hacked the school's security system and destroyed the surveillance cameras. Even those at the streets hundreds of meters away from the campus were cut off.

It was a premeditated assassination.

The shooting location was probably the abandoned building facing the classroom.

Located a hundred meters away from school, it was a perfect location to lay in ambush.

He was entirely in a state of hysteria.

This assassination attempt came so suddenly that it caught him off guard.

The murderer must have been a trained assassin. After the failed assassination, the person retreated without leaving a trace behind.