Male Red hair, red eyes Has a vertical scar over his left eye 16 years old 170cm His parents and younger brother passed away Currently married to Mutsumi --- Extremely kind, diligent, and loyal. Even after entering the spy world, he shows deep mercy and exceptional morality, never killing his enemies and only neutralizing them.

The sixth child and third daughter of the Yozakura family Female Her natural hair color is blue, but the left side of her hair is white due to a certain incident Blue eyes 16 years old 163cm Currently married to Taiyo --- Always gentle and mild-mannered, but possesses a strong sense of responsibility and determination as the family head; a classic 'iron fist in a velvet glove' type.

The eldest child and eldest son of the Yozakura family Male Black hair, squinting eyes Always has his eyes closed with a sly smile 21 years old 185cm --- Has a sister complex bordering on madness. He is extremely obsessed with Mutsumi. Consequently, he wants to kill Taiyo, but cannot do so because of the family rules. He hates Taiyo. Has a sly personality. He is the strongest spy in their world. At school, he serves as the vice-principal.

The second child and eldest daughter of the Yozakura family Female White hair, red eyes 20 years old 134cm (Has a child-like physique but is an adult) --- Mature and has a strong sense of responsibility. She is the pillar of the household, but she is deathly afraid of ghosts. She isn't afraid of monsters, though.

The third child and second son of the Yozakura family Male Green hair, green eyes 19 years old 193cm --- When unarmed: An extremely timid coward. At home, he has a habit of hiding inside a custom-made steel trash can (Tank No. 3 / No. 8). When holding a weapon: Becomes a cool-headed and serious spy.

The fourth child and second daughter of the Yozakura family Female Purple hair and eyes 18 years old 172cm --- Always gives off a lethargic and clumsy vibe as if everything is a bother. She is characterized by her purple clothes that always expose her left shoulder. She is a hacker and a gamer.

The fifth child and third son of the Yozakura family Male Blonde hair, shaggy hair that covers his eyes 17 years old 166cm --- A cheerful and free-spirited prankster. He is characterized by a dark yellow cat-paw-like pattern on his left cheek. He is a master of disguise.

The seventh child and fourth son of the Yozakura family Male Light blue hair and eyes 15 years old (Right eye is a sclera-less 'reverse' eye) Human Form/School Mode: 130cm Mutated State (Giant Mode/At Home): 300cm --- Nanao enlarges his body because his internal cells are unstable and constantly mutating. When his arms occasionally swell back into muscle, Taiyo manages it with medicine. Only the Yozakura family members know about this. In human form, he looks as described above; when he grows large, he wears a light blue bucket over his head. A mild-mannered and kind pacifist. Usually quiet, but his eyes change and he shows obsession when dealing with specialized fields like medicine, pharmacy, or chemistry. He is the medical specialist of the family.

Possesses very high intelligence, enough to understand human speech and support family missions (he even drives a car). Usually small and cute, but can grow his body to a massive size when necessary. Cannot speak human language. --- He looks like a cat due to his pointed ears and sharp eyes, but he is a highly intelligent spy dog. Has black fur. Has lime-green eyes.