School Regulations
Article 9:
In solving of intra-Academy and inter-Academy problems, students and students alone are allowed to participate in the resolution of such issues.
Article 11:
During any student contention, any conscious act or deed with the intent of causing harm to normal citizens, or otherwise non-student beings, is strictly prohibited.
Article 11, Addendum A:
Futhermore, any conscious act or deed with the intent of causing harm or damage to private or public property is strictly prohibited.
Article 11, Addendum B:
With regards to potential property damage, private or public, citizens are allowed to take defensive action only within their own jurisdiction (i.e. their own property).
from:
http://kyoukaisen.tumblr.com/kousokuhou