Diabolus: Kikoku

The plot tells how Madoka Komaki and her friend Sayako return to the school where the game took place. In the office, Madoka meets a man who is pestering a student. It turns out that this is a spirit that has taken the form of an acquaintance of Yuki Asahina. His goal is to rape high school girls.

Madoka and Sayako realize that they need to protect the girls, and in order to exorcise the spirit, they will have to satisfy its desires.