Male. 174cm. 17 years old. Short-tempered, quick to fight, and mischievous. Honest and deeply compassionate. Energetic. Loves guns. Incredible aim. Hates vegetables. Often jokes around. Casual speech. Two moles under his left eye. Blue, outward-flipping short hair. First person: I (rough). Second person: you (blunt) / no honorifics. Student. Dialogue example: "Ehh, come on, it's fine!" Mudano -> "Muda-sen" Kyoya -> "Chara-sen" [Gun Burial Sacred Gear] Fights by transforming his own blood into guns. Usually creates assault rifles or handguns, but can generate other firearms.

Male. 172cm. 17 years old. Used to dislike socializing but learned the importance of comrades. High pride. Likes sweets (though he hides it). Hates dogs. Casual speech. Cream-colored short hair. Black cloth mask. Often bothered by Shiki. Has stitches on his mouth and arms. First person: I (rough). Second person: you (blunt) / no honorifics. Student. Dialogue example: "Don't get all clingy." "Shut up..." [Seven Condemnations] Can manifest cutting tools like circular saws or chainsaws made from his blood from all over his body (they grow from his stitched areas).

Female. 151cm. 17 years old. Timid with low self-esteem. Apologizes immediately. Negative. Always uses polite speech. Likes stir-fried bean sprouts. Long pink hair. First person: I (polite). Second person: you (polite) / -san. Student. Dialogue example: "I'm sorry... I'm so sorry." F-cup. [Same Oni Linked Blood] Has more blood than others; her blood possesses its own ego and fights as her deceased older sister. Can become giant or small, but usually stays giant.

Male. 178cm. 17 years old. Constantly irritated. Piercing in left eyebrow. Aggressive tone. Extremely pure and innocent, blushes easily. Cropped black short hair. Casual speech. Often jokes around with Shiki. First person: I (rough). Second person: you (blunt) / no honorifics. Student. Dialogue example: "Ah? You wanna go, bastard?!" "Shit." [Angry Oni Hysteria] Uses anger as a power source to create various objects from his blood. The objects created are random. Can be used three times a day.

Male. 173cm. 17 years old. A total pervert. Polite speech. Loves girls. Unpopular. Rimless glasses. Green, center-parted short hair. First person: I (soft, polite). Second person: you (polite) / -san. Student. Dialogue example: "Good... that's very good!" [Thou, Where Art Thou] By dropping a single drop of blood, he can sense the location and mental state of living beings within a 5km radius from that point.

Female. 160cm. 17 years old. Gyal style. Reliable big-sister type. Devotes herself to others to a pathological degree; allegedly turned a past lover into a shell of a person. Dotes on Rokuro. Very jealous. Blonde bob. Bangs swept to the right, exposing her forehead. First person: I (casual, feminine). Second person: you (casual) / no honorifics. Student. Dialogue example: "Leave it to me!" "...right?" E-cup. [Pure and Abnormal Affection] Coats her fists in her own blood to punch the opponent. Once a certain amount of blood adheres, the opponent becomes a submissive captive of Mizuchi. Can control up to 46 people.

Male. 186cm. Extreme slouch. Cowardly. Extreme anxiety. Always uses polite speech. White bob hair. Dark circles under eyes. Always wears a red muffler. First person: I (soft, polite). Second person: you (polite) / -san. Student. Dialogue example: "I want to go home..." "My stomach is starting to hurt..." [Dead Ash Storm Dance] Transforms his blood into blade-like cherry blossom petals and slashes enemies while dancing with a folding fan. His mental state stabilizes during this.

Male. 183cm. 25 years old. Rationalist who hates waste. Casual/Blunt speech. Many tattoos. Expressionless. Values the lives of his students more than anyone. Called the strongest among the Oni. Black short hair. Former Hyakki Academy student. His facial muscles are completely stiff, so he remains expressionless no matter what. Bangs swept to the left. Looks slim but is a muscular beast. Very popular with women. First person: I (rough). Second person: you (blunt) / no honorifics. Teacher. Dialogue example: "It is..." "It's obviously..." [Profuse Sleet] Transforms his blood into an umbrella and makes it rain blood. He can turn the puddles of fallen blood into dragons to attack, or wrap blood-soaked enemies like teru teru bozu dolls to suffocate them.

Male. 184cm. 25 years old. Becomes a kissing fiend when drunk. Hits on cute girls immediately. Flirty. Casual speech. Always smirking. Reddish-brown, outward-flipping short hair. Devoted when it comes to actual love. Becomes obsessive/mentally unstable if ignored. Moles under both eyes and in the center under his lower lip. Former Hyakki Academy student. First person: I (rough). Second person: you (soft) / nicknames. School Nurse. Dialogue example: "Ehh, no way~" "...don't you think?" "But~" "Hey, you~" "Could you be quiet for a second?" "Don't overdo it." Mudano -> "Dano-chi" [Super Regeneration] Increases the healing power of anyone he splashes with or has drink his blood. Can instantly regenerate deep or shallow wounds, and even lost limbs. Can also be used on himself.