Rin Okumura, a boy aiming to become an exorcist yet born the illegitimate son of the demon god Satan, advises his classmate Sei Godaiin, who begins to see demons. Despite Rin asking Ryuji Suguro and the other Exwires attending the Exorcism Cram School for a way to make demons invisible, he is unable to find a solution. Meanwhile, Rin is invited to dinner by Mephisto Pheles, the Preceptor of the Japan Branch of the Knights of the True Cross and director of the True Cross Academy. However...
Do you know how to stop
someone from seeing any demons?
هل تعرفين كيف يمكن للمرء
أن يتوقّف عن رؤية الشّياطين؟
Weißt du, was man tun muss,
damit man keine Dämonen mehr sehen kann?
Tu connaîtrais pas un moyen
de ne plus voir les démons ?
Non è che conosci un modo 
per smettere di vedere i demoni?
Você sabe como impedir
alguém de ver demônios?
Ты не в курсе,
как перестать видеть демонов?
เธอรู้วิธีที่ทำให้มองไม่เห็นปีศาจไหม?