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...
Humph! With all that bossing around
you're doing, if you make me regret anything...
اسمع! إن جعلتني أندم على أيّ شيء
...بعد كلّ هذه الأوامر الّتي تُمليها علينا
Pah! Wenn ich’s bereuen sollte, mich so
von dir rumkommandieren lassen zu haben,
Se ora fai il capetto che dà ordini 
e poi dovesse andare male,
Quê? Mandando tanto, se fizer eu
me arrepender de alguma coisa,
Смотри мне, я тебе такую взбучку устрою,
если мы из-за твоих команд обожжёмся!
ฮี สั่งได้สั่งใหญ่เลยนะ ถ้าทำผิดหวังละก็