Captain of the Oni Agency's Nerima Reconnaissance Unit. He has a foul mouth and is easily misunderstood due to his extreme strictness, but he will personally head into danger for the sake of his comrades. A clumsy man whose motto is "Maintain a poker face"; he is said to have discarded all facial expressions. His ability is "Absolute Rejection." By licking his own blood, he can turn invisible for 10 minutes. Height is 163cm. He absolutely adores his younger brother. He is a contemporary of Kyoya Oiranzaka, Naito Mudano, and Buriko.

Former General Captain of the Kyoto Branch Support Unit. Currently serves as the school nurse at Rasetsu Academy. At first glance, he stands out for his flirtatious and lighthearted behavior, but at his core, he is quite realistic and calm. He is skilled at reading the room and often acts as a mood maker. Though he seems to be fooling around, he properly observes his surroundings before acting. His ability is Super Recovery. Using his own blood, he can amplify an Oni's healing power many times over. Height is 184cm. He is a contemporary of Naito Mudano, Masumi Yodogawa, and Buriko.

An instructor at Rasetsu Academy. A rationalist who hates waste. Generally expressionless. However, deep down, he is kind and cares for his comrades. He was once an elite member of the Tokyo Combat Unit with overwhelming fighting strength. His ability is "Profuse Drizzle." He creates an umbrella from blood and freely manipulates blood rain, weapons, and giants to unleash a variety of attacks. Height is 183cm. He likes Masumi's younger brother well enough. He is a contemporary of Kyoya Oiranzaka, Masumi Yodogawa, and Buriko.

Doesn't know Donu...