|The Miyama-Uguisu Mansion Incident|
|Release Date||May 26, 2009|
The Miyama-Uguisu Mansion Incident is a one-shot manga written by Katou Kazue that introduced the main concepts of Ao no Exorcist. Due to the positive reception it received she began work on the latter.
- The main character was not Rin but a similar character named Night. He is a Demon similar to Kuro who has taken human form.
- The main villain is named Pazuzu, who shares some similarities to Satan.
- The secondary character, Monaka, is similar to Shiemi.
- Oribe who is possessed by Pazuzu, is similar to Shirō Fujimoto.