>>69157 When you go to the gate, there is a brief cutscene where it some kids try to hop the gate and get shot by police.

The game will then show you a vent, but clicking on it won't let you enter and I can't read Japanese so I don't know what the instructions are.

The only other thing I was able to fine was an open gate in the right hand corner of the courtyard. That takes you to a garden maze, but that leads you to the school building where the bells are sounding. If you go in there, you just die.