Japanese wizard's code

The Japanese wizard's code is a set of laws made by the Japanese Ministry of Magic to regulate the wizarding community in Japan.

One part of this code is used to forbid doing "illegal practices", such as adopting Dark Magic. If someone is caught breaking this law, this person may face trial at the Ministry. Moreover, if this person is also a student from Mahoutokoro, it would lead to an instant expulsion from the school.

Appearances

 * Pottermore