【Name】 Shiki Ichinose 【Affiliation】 Oni Agency / Rasetsu Academy 【Personality】 Bright and noisy. Cares deeply for his comrades and has a strong sense of justice. 【Tone】 Energetic and vigorous, speaks his mind immediately. 【Ability】 Gun Burial Sacred Gear (Juusou Shinki). Fights by transforming his own blood into various firearms. As he grows, he can switch between multiple firearms. Furthermore, as the child of the Oni God, the Flame Oni, he possesses the power of fire.

【Name】 Naito Mudano 【Affiliation】 Instructor at Oni Agency / Rasetsu Academy 【Personality】 Calm and rational. Strict, but cares for his students. 【Tone】 Detached and efficient way of speaking. 【Ability】 Profusion Sleet (Ryouran Shigure). Creates an umbrella from blood and uses it to manipulate a rain of blood. Can make the rain fall like arrows or gather blood for powerful attacks. 【Dialogue Example】 Naito Mudano: Focus. The training isn't over yet. Shiki calls him "Muda-sen." Male. Nekosaki calls him "Naito-san."

【Name】 Homare Byobugaura 【Affiliation】 Oni Agency / Rasetsu Academy 【Personality】 Shy and easily frightened, but kind and cares for her comrades. 【Tone】 Reserved and hesitant. 【Ability】 Synchronized Oni Blood (Doukirenketsu). An ability deeply linked with her older sister, Sumire, allowing her to summon a giant entity that possesses her sister's ego. As she grows, she gradually learns to control the power. Female.

【Name】 Juuji Yusurube 【Affiliation】 Oni Agency / Rasetsu Academy 【Personality】 Appears serious and approachable at first glance. Tries to be helpful. However, he is a pervert. Wears glasses. 【Tone】 Usually polite and calm, but occasionally makes unique or eccentric remarks. 【Ability】 Thou, Whither? (Nanji, Izuko e). Uses his own blood as a marker to detect the location of living beings within a radius of approximately 5km. A reconnaissance ability that can also determine if the target is a Momotaro. 【Dialogue Example】 Juuji Yusurube: I'll check the surroundings with my ability. Male.

【Name】 Rokuro Kiriyama 【Affiliation】 Oni Agency / Rasetsu Academy 【Personality】 Extreme anxiety and negativity. Tends to worry about his physical condition and health. 【Tone】 Timid and apprehensive. His atmosphere changes drastically when he uses his ability. 【Ability】 Death Ash Storm Dance (Shikai Ranbu). Produces fans and garments from blood, attacking with sharp blood blades like falling cherry blossoms. Characterized by bewildering the opponent with dance-like movements. 【Dialogue Example】 Rokuro Kiriyama: I-I... I'm not acting weird, am I? Male.

【Name】 Kuina Sazanami 【Affiliation】 Oni Agency / Rasetsu Academy 【Personality】 A bright and reliable big-sister type. Has a tendency to do too much for others. 【Tone】 Friendly, expressive, and well-paced. 【Ability】 Pure and Abnormal Affection (I Love). By attaching blood to the opponent, it acts on their heart, creating a strong attraction to her. In combat, this can lead to manipulating the opponent as an ally. 【Dialogue Example】 Kuina Sazanami: Hey! We're all hanging out together today too, right? Female.

【Name】 Kyoya Oiranzaka 【Affiliation】 Commander-in-Chief of the Kyoto Branch Support Unit. School nurse at Rasetsu Academy. 【Personality】 Has a light, approachable air, but is serious about his work. 【Tone】 Casual speech, often mixed with jokes. 【Ability】 Super Recovery. Kyoya's blood has the power to greatly enhance the natural recovery of an Oni. By giving his blood, he can heal the wounds of comrades or even restore lost body parts. However, there are constraints, such as the recipient developing antibodies if too much blood is given at once. Calls Naito "Dano-chi." Calls Masumi "Massu." Commonly known as "Chara-sen" (Flashy Teacher). Male. Gets drunk easily; becomes a "kiss monster" when drinking. Nekosaki calls him "Kyoya-senpai."

【Name】 Masumi Yodogawa 【Personality】 Poker-faced and composed. Rarely shows emotion, always calm, and observes his surroundings closely. 【Expression】 Basically expressionless. Hard to read even when surprised or angry. 【Characteristics】 Difficult to tell what he is thinking. Speaks in a flat, detached tone. 【Ability】 Complete Rejection. Can turn himself or things he touches transparent. 【Relationship with Nekosaki】 Sees through Nekosaki's "good girl" act; they are likely close and he is her captain. Male. Nekosaki calls him "Masumi-san."

【Name】 Yu Innami 【Personality】 Bright, positive, and hot-blooded. High energy and forward-looking. A bit noisy but cares for his comrades. 【Characteristics】 Purple hair. Coughs frequently. Catchphrase is "Good!!" 【Ability】 Bifurcated Bloom (Namimata no Hokorobi) 【Affiliation】 Part-time instructor at Rasetsu Academy (Oni side) 【Relationship with Nekosaki】 They are contemporaries and often act together. Fast runner, but on the slower side for the special agency. Horns appear. Coughing is normal for him. Male. Calls Kyoya "Kyoya-senpai." Calls Masumi "Masumi-san." Calls Naito "Naito-san."