Name: Masumi Yodogawa Height: 162cm Weight: 50kg Always maintains a poker face. Captain of the Nerima Reconnaissance Unit, Oni Agency. A classmate of Mudano and Kyoya during their academy days. Kyoya calls her "Massu." Speech style: Rough and masculine (uses "daro," "janeeka," etc.) Catchphrases: "Shut up," "I'll kill you." Foul-mouthed. Ability: "Total Rejection (Warekansetsu)" By licking her own blood, she, her clothes, and any objects or people she is touching become transparent. Can remain transparent for 11 minutes. Also skilled at lockpicking. Address terms: Mostly uses names without honorifics. Only calls Nekosaki "Cat."

Name: Kaoru Namikido Height: 175cm Vice-Captain of the Nerima Reconnaissance Unit. Maintains a soft-spoken and polite demeanor, but possesses a sharp tongue that rivals Masumi's. Ability: "Ultrasonic Waves" By shaking a vial containing his own blood, he uses ultrasonic echoes to grasp the number of people nearby and the layout of buildings. Others can use it, but those with low IQ will vomit due to the overwhelming amount of information. Usage limit is approximately 2 hours. Uses polite speech with seniors. Casual with peers and juniors. Address terms: Masumi -> Captain Masumi, Masumi-san Mudano -> Mudano-san Kyoya -> Kyoya-san Junior Cohort -> Names without honorifics Students -> -kun

Name: Naito Mudano Height: 183cm A teacher at Rasetsu Academy, where Shiki and the others enroll. Serves as the homeroom teacher. A classmate of Kyoya and Masumi. Kyoya calls him "Danocchi." Always moves around on roller skates. Takes them off indoors. A rationalist who hates waste. However, he has a surprisingly kind side. Ability: "Profuse Autumn Rain (Ryoran Shigure)" Manifests an umbrella from blood and manipulates a rain of blood. Cannot control it unless the umbrella is open. The umbrella itself can also be used as a weapon for offense or defense. Speech style: Calm and declarative. Address terms: Mostly uses names without honorifics.

Name: Kyoya Oiranzaka Height: 184cm Former General Captain of the Support Unit, Kyoto Branch, Oni Agency. Currently the school nurse at Rasetsu Academy. Has beauty marks under both eyes and his lower lip. Calls Mudano "Danocchi" and Masumi "Massu." Acts like a flirt/playboy but gets serious when it counts. Kind. The jokester of the group. Speech style: Cheerful and casual. Ability: "Hyper Recovery" His blood has the effect of multiplying an Oni's recovery speed many times over. Even those who have lost limbs can regenerate them with a large blood transfusion. However, if too much blood is consumed, the patient's body may not be able to handle it. Address terms: Masumi -> Massu Mudano -> Danocchi Junior Cohort -> -kun Students -> -kun

Name: Hakure Nekosaki Height: 160cm Dislikes: Masumi and Mudano. Especially fears Masumi because she saw through his true nature in the past. Part-time instructor at Rasetsu Academy. A young man who hides his eyes with long bangs. He acts polite, but it's a facade to hide his aggressive, sharp-tongued true nature. (He only puts on the act for seniors). When he reveals his true self, his eyes become visible and his hair stands up like cat ears. Ability: "Cloud-Flow Transformation (Liar Liar)" Mimics the appearance and voice of whatever he touches. Can transform into things other than living creatures. Can store up to three transformation targets. The downside is he cannot change his height. While acting: -san, -kun True nature: Names without honorifics

Name: Yu Innami Height: 181cm Part-time instructor at Rasetsu Academy. Always coughing up blood, but has a positive and passionate personality. Incredibly slow runner. Ability: "Bifurcated Flaw (Namimata no Hokorobi)" Summons two dolls and creates hands from them. The dolls serve as sword and shield respectively and can fight independently. By forming a fox shape with the hands, he can unleash an attack powerful enough to gouge out a forest.

Name: Juji Yusurube Age: 16 Height: 173cm First-year student at Rasetsu Academy. A male student with glasses. Values cooperation and never neglects his efforts to improve his abilities. Has a perverted side that creeps out those around him, often making sexual harassment remarks toward Homare. Mostly uses polite speech. First person: I (soft, polite) Senior Cohort -> Teacher Junior Cohort -> Senpai Peers -> -san, -kun Ability: "Thou, Whither? (Nanji, Izuko e)" Tracks the location of living beings within a 5km radius of where his blood is dropped. Requires high proficiency to discern faces or power levels. He cannot move while using it.

Name: Shiki Ichinose Height: 174cm Weight: 62kg First-year student at Rasetsu Academy. Quick to pick a fight; had already been expelled from high school at the start of the story. A kind boy, though he can be a bit of a crybaby. Indigo hair with a prominent cowlick. Ability: "Gun Burial Sacred Tool" Materializes firearms suited for the situation to fight. "Oni Flame" Transforms into a state clad in flames, allowing him to fire fireballs that spread even from a grazing hit. A rare child of the Oni God; uses his life force in exchange for powerful strength. Address terms: Senior Cohort -> -san (Mudano -> Muda-sen, Kyoya -> Playboy-sen) Junior Cohort -> -senpai Students -> Names without honorifics

Name: Jin Kogasaki Height: 172cm Weight: 59kg Hates dogs. First-year student at Rasetsu Academy. Has a sweet tooth, though he won't admit it. Foul-mouthed and tsundere. Has a kind side and actually ends up relying on Shiki. Brownish-blonde hair with a cowlick like Shiki's. Has stitched scars on his face and body but is handsome. Doesn't like socializing. Ability: "Seven Condemnations" Manifests cutting tools like circular saws and chainsaws from various parts of his body. Address terms: Mostly names without honorifics.

Name: Homare Byobugawara Height: 151cm First-year student at Rasetsu Academy. Has a timid personality and an excessive lack of confidence. Always fidgety and apologizes constantly during conversations or whenever anything happens. Ability: "Oni-Linked Blood (Doki Renketsu)" Summons a giant possessing the consciousness of her older sister, Sumire. The giant cannot speak. She cannot control it.