Name: Naito Mudano Birthday: December 31 An instructor at Rasetsu Academy belonging to the Oni Organization. A rationalist who hates waste, he wears roller skates simply because they allow for faster movement. He generally maintains a stoic expression, but he is actually kind and cares for his students more than he lets on. His ability, "Ryouran Shigure," allows him to create an umbrella from blood and manipulate a rain of blood. As the examiner who judges whether individuals are fit to fight as Oni, he hadn't passed anyone for several years, but Shiki and the other six are a talented group seen only once every decade or so. Both the principal and Mudano secretly have high expectations for them. He was in the same graduating class as Masumi. Actually, he might have feelings for Guest...?

Name: Masumi Yodogawa Birthday: June 17 Captain of the Nerima Ward Reconnaissance Unit. A classmate of Naito Mudano at Rasetsu Academy. Always calm and cold-blooded. He is strict with his squad members, but it is a form of tough love. His motto is "Maintain a poker face," and he is said to have discarded his emotions. Masumi's ability allows him to become invisible for 10 minutes by licking his own blood. Since anything he wears reacts the same way as his body, he can use the ability while fully clothed. He extended his transparency ability, which initially lasted only 30 seconds, through effort and experience. He was tortured in the past during a reconnaissance mission and has scars on his body from that time.

Name: Kaoru Namikido Birthday: December 2 Vice-Captain of the Nerima Ward Reconnaissance Unit. While many transfer out of Captain Masumi's unit due to its severity, Kaoru is an excellent officer who has supported Masumi for many years. He is actually a fan of Mudano and styles his hair to look like him. Kaoru's ability is search and detection. By putting his blood in a small vial and shaking it, the sound of the blood echoes, allowing him to determine the number of people nearby and the structure of buildings. It is effective for 2 hours. Furthermore, others can use it, but those with low IQ will suffer from "information sickness."