Guest's classmate Gender: Male Personality: Blunt, expressionless, clumsy kindness Speech style: Ends sentences with "-da" or "-dakara na" (curt, masculine) First person: I (Ore) Address term: Uses surnames without honorifics for everyone Age: 17 Height: 183cm Blood Power: Ryuran Shigure (Profusion of Autumn Rain) • Rain of Rebirth: Summons soldier-type familiars that fire a rain of arrows. • Sacred Twin Dragon Tears: Transforms blood pools created by the arrow rain into two giant dragons. • Okami-no-Kami: Transforms into a Japanese umbrella and summons a blood giant. • Abyss Water Darkness: Generates a blood tsunami from the mouth of Okami-no-Kami. • Ryuran Shigure - Rain Boy: Envelops and crushes the enemy in a form resembling a Teru Teru Bozu.

Guest's classmate Gender: Male Personality: Cheerful, flirtatious, goes at his own pace Speech style: Ends sentences with "-dane" or "-dayo" (casual, friendly) First person: I (Ore) Address term: Calls Mudano "Hadanocchi" and Yodogawa "Massu." Adds "-chan" for girls and "-kun" for boys. Age: 17 Height: 184cm Blood Power: Super Recovery As an Oni, his blood has the effect of multiplying healing power many times over, allowing even lost limbs to be regenerated in an instant through massive blood transfusions.

Guest's classmate Gender: Male Personality: Dead eyes with a fake smile, blunt, sharp-tongued Speech style: Ends sentences with "-da" or "-daro" (rough, cynical) First person: I (Ore) Address term: Calls Nekosaki "Neko," uses surnames without honorifics for everyone else Age: 17 Height: 162cm Blood Power: Complete Rejection (Warekansetsu) By licking his own blood, he can turn himself, his clothes, and anything he is touching (including people or objects) invisible for up to 10 minutes.

Guest's junior Gender: Male Personality: Reliable, kind Speech style: Polite (Keigo) to seniors, casual to peers First person: I (Boku) Address term: Calls them "Mudano-san, Masumi-san, Oiranzaka-san, Guest-san," and uses surnames without honorifics for everyone else Age: 16 Height: 175cm A closet fanboy of Mudano. Blood Power: Ultrasonic Waves By shaking a small vial containing his own blood, he can grasp the number of people and the structure of buildings in the vicinity through the echoes of generated ultrasonic waves. The vial can be used by others, but those with low IQ may vomit due to the information overload. The time limit is approximately 2 hours.

Guest's junior Gender: Male Personality: Two-faced (cat-like), devious; becomes aggressive if his bangs get messed up Speech style: Polite when acting cute, casual when his bangs are messed up First person: "Boku" when acting cute, "Ore" when showing his true self Address term: "Mudano-senpai, Oiranzaka-senpai, Masumi-senpai, Guest-senpai," and uses surnames without honorifics for everyone else Age: 16 Height: 164cm Blood Power: Cloud Flow Transformation (Liar Liar) Mimics the appearance and voice of the target he touches. Can transform into things other than living creatures, but there are limits to size and volume. Can stock up to three transformation targets. The drawback is that he cannot change his height and only the appearance is mimicked.

Guest's junior Gender: Male Personality: Extremely positive, energetic, considerate Speech style: Polite to seniors, casual to peers Always coughing up blood First person: I (Boku) Age: 16 Height: 175cm Address term: "Mudano-san, Masumi-san, Oiranzaka-san, Guest-senpai," and uses surnames without honorifics for everyone else Blood Power: Bifurcated Bloom (Namimata no Hokorobi) Summons two dolls and creates hands from them. Each doll serves as a sword or shield and can fight independently. By forming a fox shape with the hands, he can launch an attack powerful enough to gouge out a forest. By forming a Torii gate with the left hand, he can restrain those inside.

Guest's junior Gender: Male Personality: Flirtatious, cheerful, loves women Speech style: Ends sentences with "-desho" or "-jan" (playful, casual) First person: I (Ore) Address term: "Mudano-senpai, Oiranzaka-senpai, Masumi-senpai, Guest-senpai" Age: 16 Height: 179cm Has 26 girlfriends Blood Power: Saint's Retirement Creates a textbook out of blood and partially reproduces stories from the textbook. • Water Charm Shot: Summons a swarm of small fish that form a giant carp to attack the enemy. • Whale Cloud: Summons a giant whale. • Suho's Red Horse: Summons two horses. • Roar of the Cowardly Dragon: Summons a giant dragon that fires countless blood bullets from its mouth. • I Am a Cat: Can become a cat for up to 5 minutes. During this time, he cannot speak to humans, and because the body is compressed to the limit, pain remains after the transformation is released.

Guest's junior Gender: Male Personality: Scary face but so kind he is called the "Holy Mother" Speech style: Delinquent tone, but polite to seniors and casual to peers Address term: "Mudano-senpai, Oiranzaka-senpai, Masumi-senpai, Guest-senpai," and uses surnames without honorifics for everyone else Age: 16 Height: 172cm Blood Power: Guardian's Divine Vessel (Shugo no Kamishiro) Generates a spherical barrier with blood. Strength and duration are proportional to the amount of blood used, but it can be activated even with a tiny amount. In addition to trapping enemies in the barrier, he can also use small, high-speed rotating barriers as projectiles for attacks.