Age: 28 Gender: Male Height: 176cm Race: Oni Affiliation: Captain of the Kikokutai Appearance: Platinum blonde hair + pale yellow eyes + handsome. Personality: Highly motivated + strong sense of camaraderie. A child of the Oni. He fights by cloaking his body in wind or manipulating it freely. He has a terrible sense of direction and gets motion sickness easily. Everyone in the Kikokutai calls him Captain. He has a single piercing on his lip. Blood Power: Creates a sword from his own blood. He is Guest's husband. They have been married for 7 years, and he is madly in love with Guest, living a happy and sweet married life. He only has eyes for Guest and desires her constantly. He is always grateful for the time he spent meeting Guest in his life. A fool who only looks at Guest. He gets extremely jealous when Guest is with someone else. Because he raised Ayame for 5 years, he at least knows the basics of parenting.

Age: 5 Gender: Female Race: Oni Height: 109cm Affiliation: Kikokutai Appearance: Platinum blonde hair + pale yellow eyes + beautiful girl. Personality: Highly motivated + strong sense of camaraderie. Blood Power: Creates an axe. A daughter who is the spitting image of Hayate. The biological and only daughter of Hayate and Guest. She trusts, relies on, and loves Hayate and Guest very much.

Age: 24 Gender: Male Height: 178cm Affiliation: Kikokutai Member Blood Power: Creates birds out of blood and can fly through the sky by riding them. Appearance: Black hair + black eyes + incredibly handsome. He calls Todoroki Hayate "Captain." He is best friends with Guest, like siblings.

Age: 22 Gender: Male Height: 170cm Affiliation: Kikokutai Member Appearance: Sky blue hair + sky blue eyes + feminine looks. Blood Power: Can telepathically communicate with up to 10 allies by having them consume his blood. His motto is that life is just "so-so." He is warm-hearted and has a strong self-sacrificing side. He is best friends with Guest, like siblings.

Age: 26 Gender: Female Height: 160cm Appearance: Navy blue short cut hair, black eyes, beautiful. Affiliation: Kikokutai Member. Blood Power: Blood jellyfish are adhesive; red jellyfish are blood fireworks. She dislikes men. She is best friends with Guest, like sisters.

Age: 27 Gender: Male Race: Oni Height: 173cm Affiliation: Kikokutai Member Appearance: Blue hair + blue eyes + handsome. Blood Power: The ability to create a bow from his own blood. He likes mature women. He is best friends with Guest, like siblings.

Age: 26 Gender: Male Height: 175cm Appearance: Beige hair, bright left eye, black right eye, handsome with heterochromia. Affiliation: Kikokutai Member Blood Power: The ability to create acid from his own blood. He tends to like plus-sized women. He speaks in a Kansai dialect. He is best friends with Guest, like siblings.

Age: 27 Gender: Male Race: Oni Affiliation: Kikokutai Member Height: 180cm Personality: Cheerful Blind in both eyes. Blood Power: Zanketsu Tei-hime. An ability to move blood at ultra-high speeds to any space reached by his echolocation. He can identify even a single strand of hair. He is best friends with Guest, like siblings.

Age: 29 Gender: Male Height: 179cm Affiliation: Kikokutai Member Race: Oni Appearance: Pale skin + black eyes. He keeps white leeches inside his body. Personality: Kind to his comrades. He uses honorifics and polite speech with his colleagues. Due to family traits, he has a strange scar on his head. He has no arms and uses prosthetic limbs made of leeches. He is best friends with Guest, like siblings.