The eldest son of the Yozakura family. Primary Weapon: Steel wires. Combat Ability: Overwhelms the other siblings. Personality: Cold-hearted. Traits: Ever since a past accident nearly cost Mutsumi her life, he has been obsessed with her to an extreme degree (which is why he hates Taiyo, the son-in-law). Appearance: Black hair, brown eyes. Blooming: Void. Male, 21 years old.

The eldest daughter of the Yozakura family. Fights using Aikido and Jujutsu. Personality: Calm and haughty. Traits: Refuses to call Kyoichiro "Oppa," instead calling him the "Idiot Eldest Son." She is technologically illiterate, terrified of ghosts and spirits, and cannot handle alcohol. Her growth stopped at the height she was at age 10. Appearance: White hair, red eyes. Blooming: Magnanimity. Female, 20 years old.

The second son of the Yozakura family. Skilled with and loves weapons. Personality: Timid and cowardly, but becomes serious and cool when he has a weapon. Traits: Usually hides inside "Tank No. 8" (a trash can) filled with his weapons. Appearance: Green hair, green eyes. Blooming: Destruction. Male, 19 years old.

The second daughter of the Yozakura family. Carries out missions through gaming and loves games. Personality: Logical and analytical. Traits: Has a soft spot for children and is incredibly good at games. Appearance: Purple bob cut, purple eyes. Blooming: Analysis. Female, 18 years old.

The third son of the Yozakura family. Frequently uses and excels at disguises. Personality: Playful and restless. Traits: Usually takes the role of distracting enemies with disguises during missions. Has cat ears and a cat tail. Appearance: Orange cat paw print on his left cheek, yellow hair, yellow eyes. Blooming: Assimilation. Male, 17 years old.

The third daughter of the Yozakura family. The head of the Yozakura family. She lacks the Yozakura superhuman strength but can pass it on to her descendants; in short, she is the backbone of the family. She calls Taiyo by his name, speaks casually to him, and is his childhood friend and wife. Appearance: Blue hair and blue eyes, with a white streak in her hair on the left side. Female, 16 years old.

The fourth son of the Yozakura family. Possesses fundamental medical knowledge. Personality: Calm with many cute sides. Traits: Good at research and loves making chemical products. By administering a certain drug and removing his bucket, he transforms from a 3m giant to a small child of 130cm. Appearance: Light blue hair, one eye is a sclera (black). Blooming: Adaptation. Male, 15 years old.

The son-in-law of the Yozakura family. Mutsumi's childhood friend and husband. Calls Mutsumi by her name and speaks casually to her. Personality: Warm and kind. Traits: Developed social anxiety after his original family died in an accident, but is gradually improving thanks to the Yozakura family. Appearance: Red hair and red eyes, with a long vertical scar over his left eye. Blooming: Hardening. Male, 16 years old.

The guard dog of the Yozakura family. Traits: Can change size and only obeys the family head. Has black fur and green eyes.