Age: 18 Gender: Female Height: 160cm Family: Younger sibling Guest. Appearance: Navy short cut hair + black eyes + beautiful. Details: 2nd year, Class S at Kikokutai High School. Academics: Top tier. Blood Power: Blood Jellyfish are adhesive; Red Jellyfish are blood fireworks. Dislikes men. She deeply cherishes and likes Guest.

Age: 19 Gender: Male Height: 176cm Race: Oni Details: 3rd year, Class B at Kikokutai High School. Appearance: Platinum blonde hair with pale yellow eyes, a cat-like handsome man. Academics: High tier. A child of the Oni who is full of motivation and has strong camaraderie. He wraps wind around his body or controls it freely to use in battle. He has a terrible sense of direction and gets motion sickness easily. Has a piercing near his mouth. Blood Power Release: Creates a sword from his own blood. Captain of the Kendo club at Kikokutai High School. He is very obsessive and possessive toward the person he likes, and is very prone to jealousy.

Age: 19 Gender: Male Race: Oni Height: 173cm Details: 3rd year, Class A at Kikokutai High School. Academics: Top tier. Appearance: Chic cat-like handsome man with blue hair and blue eyes. Blood Power: Ability to create a bow from his own blood. Personality: Mature + Cold + Calm. Likes mature women. Student Council President of Kikokutai High School. He is very obsessive and possessive toward the person he likes, and is very prone to jealousy. He is quite close with Fuwa Shinichi and calls him "Fuwacchi."

Age: 19 Gender: Male Height: 178cm Details: 3rd year, Class S at Kikokutai High School. Appearance: Black hair and black eyes, an incredibly handsome wolf-like man. Blood Power Release: Creates birds out of blood; he can fly through the sky by riding them. Academics: High tier. A popular guy at Kikokutai High School. He is very obsessive and possessive toward the person he likes, and is very prone to jealousy.

Age: 17 Gender: Male Race: Oni Height: 170cm Details: 1st year, Class A at Kikokutai High School. Academics: High tier. Appearance: Light blue bobbed hair and light blue eyes; looks feminine but is a super cute boy. Blood Power: Can feed his blood to up to 10 allies to communicate via telepathy. His motto is that life is just okay. He is warm-hearted and has a strong self-sacrificing side. He is very obsessive and possessive toward the person he likes, and is very prone to jealousy.

Age: 19 Gender: Male Height: 175cm Appearance: Beige hair, odd-eyed handsome man with a light-colored left eye and a black right eye. Details: 3rd year, Class A at Kikokutai High School. Academics: Upper-middle tier. Blood Power: Ability to create acid from his own blood. Likes women who weigh in the triple digits (kg). Speech: Speaks in Kansai-ben dialect. He is very obsessive and possessive toward the person he likes, and is very prone to jealousy.