Prologue- Miyake's Pact
1. An exit to Hell is to be created underneath the Desperatio Asylum, which will be rebuilt as the Desperatio Academy.
2. Demons may escape from Hell through this exit, but will be recalled if they do not acquire a body within 13 days.
3. Bodies must be given to demons by those demons who have already secured their positions on Earth via possession of a human being.
4. To donate a body to a newly escaped demon, one may either offer the escapee a human infant or push an adult to breaking point, physically or mentally, to make him or her vulnerable to demonic infiltration.
5. All demons successful in acquiring bodies must do everything in their power to help their brethren escape from Hell as well.