Itsuki Zeze

Itsuki Zeze (膳所 斎) is an exorcist and member of the Zeze House.

Rokuro Enmado
There is a mutual dislike. Rokuro has taken to calling him Fatty Masa (デブ正), like Tenma Unomiya.

Etymology

 * The name Itsuki means "religious purification, Buddhist food, room, worship, avoid, alike" (斎).