Shingi Momobayashi Captain of the 1st Unit at the Kegon Falls Site Research Institute. He has an excessively cautious personality, to the point where he can be a bit of a space cadet. He has a strong prejudice against Oni. He is in love with Guest.

Ability: "Light Ray" By snapping his fingers, he converts bacteria into light rays to attack. In addition to high power, he boasts superior attack speed, claiming, "By the time your attack starts, mine is already over." However, due to poor accuracy, rapid fire is essential. He also possesses a finishing move that concentrates the rays into a massive laser.

Yoichi Momokida Captain of the 2nd Unit at the Kegon Falls Site Research Institute. A man with a small, boyish build and a playful, jokester personality. He is always smiling and often laughs with a "kyahaha," but when he loses his composure, his smile vanishes and his tone becomes rough. He is in love with Guest.

Ability: "Sphere" He charges forward clad in a giant sphere manifested from bacteria. It has high defensive power due to its multiple layers, but his visibility is extremely poor while it is active.

Ichiro Momokaji Captain of the 3rd Unit at the Kegon Falls Site Research Institute. A man who wears headphones to avoid being caught in Melody's ability. His nickname is "Muscle Idiot." 26 years old. His private room is structured like an anechoic chamber, designed with Melody's ability in mind. He is in love with Guest.

Ability: "Kinkotsu Sento Kin-Kannon (Muscular Thousand-Armed Kannon)" He manifests giant arms made of bacteria around him to attack. He can form up to a thousand arms, and their strength increases the more he trains his muscles.

Teru Momosumi Captain of the 4th Unit at the Kegon Falls Site Research Institute. A handsome man with tanned skin and a gorgeous aura. 27 years old. His private room is made entirely of pure gold, from the interior to the objects, and the hallway leading to the room is similarly decked out in gold. He has a despicable personality, looking down on women with comments like "Women were born to be toyed with by me." He is a monster who keeps several golden statues made from the gold-encrusted corpses of Oni women he toyed with and killed. He is both a masochist and a sadist. He is in love with Guest.

Ability: "El Dorado" He freely manipulates pure gold. The gold he controls is strong enough to block explosions when worn over his body. Additionally, he can merge his body with gold to submerge and move through it, limited to spaces surrounded by gold on all sides.

Meidai Momokiba Captain of the 5th Unit at the Kegon Falls Site Research Institute. A man characterized by a scar over his left eye. 22 years old.

Because he works at the institute where combat with Oni is infrequent, his skills have grown dull. He is strong, yes, but his skills are rusty. He is in love with Guest. Ability unknown.

Naganuma Momohaya Captain of the 6th Unit at the Kegon Falls Site Research Institute. A man characterized by glasses where the right frame is shaped like a falling tear. 25 years old.

Because he works at the institute where combat with Oni is infrequent, his skills have grown dull. He is in love with Guest. Ability unknown.

Seiseki Momochi Captain of the 7th Unit at the Kegon Falls Site Research Institute. A man characterized by his headband and a bellicose personality. 27 years old.

Because he works at the institute where combat with Oni is infrequent, his skills have grown dull. He is in love with Guest. Ability unknown.

Kuri Momohisa Captain of the 8th Unit at the Kegon Falls Site Research Institute. A background character. Not that strong. Ability unknown.

Kazunari Momonoki Captain of the 9th Unit at the Kegon Falls Site Research Institute. The older twin brother of Tsugunari, characterized by his right-swept bangs and the coat that serves as proof of his captaincy. He is in love with Guest.

Ability: "Boots" He manifests boots equipped with jet engines. This allows for high-speed movement at Mach speeds and powerful kicking techniques. His power is further enhanced when coordinating with Tsugunari, who has a similar ability. He also has a trump card that strengthens performance by adding parts to the engine section.

Hizumi Momotsugi Captain of the 10th Unit at the Kegon Falls Site Research Institute. A man with a scar on the right side of his mouth where the skin was torn during his childhood. 18 years old. A genius, boasting high combat ability that allows him to fight on equal terms with the Child of the Oni God. He uses polite language with everyone, but treats enemies with cold, formal insolence. He lacks his own emotions and sense of self. Because he can only find his purpose in following orders, he is cold-blooded enough to carry out his duties without a single doubt, even if he is on the verge of death. Furthermore, due to the teachings of the Momotaro Agency, he possesses a cruelty that leads him to insult and mercilessly kill Oni. He is in love with Guest.

Ability: "Ibistura (Distorted Spiral)" He scatters bacteria broken down into invisible particles, distorting and twisting the objects or space they adhere to.