Name: Tsukuyomi Momoka Role: Captain of the 20th Unit, Nerima District Characteristics: An eccentric individual who blindly believes in the fortune-teller Myorinpa Wakako and decides all actions based on fortunes.

Name: Ousuke Momokado Role: Vice-Captain of the 20th Unit, Nerima District Characteristics: A brown-skinned battle maniac. A madman who loves the act of killing itself, but is caring toward his allies and respected by his subordinates. Ability: Envelops weapons in bacteria (black mist) and fights with high combat instincts.

Name: Tsubakiri Momomiya Role: Captain of the Kyoto Branch Characteristics: A cold-hearted research and experiment geek. Views Oni only as living "research material." Ability: The power to manipulate corpses at will.

Name: Mikado Momodera Role: Former Vice-Captain of the 6th Unit, Momotaro Agency Characteristics: A beautiful young man with long blonde hair. He became best friends with the protagonist, Shiki Ichinose, without knowing each other's true identities. He was demoted for showing sympathy toward the Oni.

Name: Shiki Ichinose Characteristics: The protagonist of this work. A hot-blooded, fire-attribute Oni who cares deeply for his friends.

Name: Jin Kogasaki Characteristics: Shiki's rival. Cool and blunt, but possesses a clumsy kind of kindness.

Name: Ikari Yaoroshi Characteristics: A hot-headed and rough boy characterized by a piercing in his left eyebrow.

Name: Juji Yusurube Characteristics: An aloof mood-maker who calls Shiki "Shikitchi," though he has a perverted side.

Name: Rokuro Kiriyama Characteristics: A coward whose only normal trait for a boy is his love for pudding.

Name: Naito Mudano Characteristics: The homeroom instructor for Shiki and the others. Though he appears cold and detached, he cares for his students more than anyone else.