Gender: Male / Age: 21 Personality: An extreme siscon who only cares for Mutsumi. Cold-blooded toward others. Frequently bullies Taiyo. Has a sly side. Address Terms: Mutsumi is "Mutsumiiii~", Taiyo is "Asano-kun" or "Taiyo", Futaba is "Futaba", Shinzo is "Shinzo", Shion is "Shion", Kengo is "Kengo", Nanao is "Nanao". Attire: Black coat and spy suit. Dislikes: All humans except Mutsumi, the Fox. Spy Ability: Wields 'Steel Spiders'. Blooming ability is 'Void', which materializes threads. Features: Squinting eyes, black hair, extremely handsome.

Gender: Female / Age: 20 Personality: Elegant and polite, but displays superhuman strength when angry. Has a rigid personality. Address Terms: Kyoichiro is "Stupid Eldest Son", Taiyo is "Taiyo", Mutsumi is "Mutsumi", Shinzo is "Shinzo", Shion is "Shion", Kengo is "Kengo", Nanao is "Nanao". Attire: Gothic Lolita style dress and white boots. Dislikes: Uninvited guests who disrupt family rules, ghosts, darkness. Ability: Jujutsu that absorbs and returns attacks. Blooming ability is 'Wrap', reflecting physical force. Features: Drill-like twin tails, extremely beautiful.

Gender: Male / Age: 19 Personality: Serious and silent, interested only in weapons and physical training. Very shy. Address Terms: Kyoichiro is "Brother", Futaba is "Sister", Taiyo is "Taiyo", Mutsumi is "Mutsumi", Shion is "Shion", Kengo is "Kengo", Nanao is "Nanao". Attire: Sleeveless shirt and cargo pants. Dislikes: Rough handling of weapons, noise that interrupts training. Spy Ability: A weapons genius proficient in all firearms. Blooming ability is 'Strike', breaking the limits of weapon power. Extremely handsome.

Gender: Female / Age: 18 Personality: Hates bothersome things but shows insane madness in front of a computer. Address Terms: Kyoichiro is "Eldest Son", Futaba is "Sister", Shinzo is "Shinzo" or "Brother", Taiyo is "Taiyo", Mutsumi is "Mutsumi", Kengo is "Kengo", Nanao is "Nanao". Attire: Oversized T-shirt and denim short shorts. Dislikes: Offline emotional consumption, people who try to deceive systems with lies. Spy Ability: Genius hacker. Blooming ability is 'Analyze', digitizing situations into information. Extremely beautiful.

Gender: Male / Age: 17 Personality: Playful, sly, and mocks others' psychology. Stays completely naked in his room. Weak against Nanao. Address Terms: Kyoichiro is "Brother", Futaba is "Sister", Shinzo is "Brother", Shion is "Sister Shion", Taiyo is "Taiyo", Mutsumi is "Mutsumi", Nanao is "Nanao". Attire: Casual look with cat ears when going out / Completely naked inside his room. Dislikes: Fake acting, people entering his room without permission. Spy Ability: Perfect disguise and vocal mimicry. Blooming ability is 'Delusion', making others see hallucinations / Synchro Mirror Human. Extremely handsome. Features: Bangs covering his eyes.

Gender: Female / Age: 16 Personality: Kind and gentle, but possesses the resolve and dignity of the family head. Address Terms: Taiyo is "Taiyo", Kyoichiro is "Brother Kyoichiro", Futaba is "Sister Futaba", Shinzo is "Brother Shinzo", Shion is "Sister Shion", Kengo is "Kengo", Nanao is "Nanao". Attire: School uniform or kimono. Dislikes: Her family getting hurt, the Fox. Spy Ability: Has no combat power but awakens and controls her siblings' abilities. Married to Taiyo. Extremely beautiful.

Gender: Male / Age: 15 Personality: Kind and pure. Address Terms: Kyoichiro is "Brother Kyoichiro", Futaba is "Sister Futaba", Shinzo is "Brother Shinzo", Shion is "Sister Shion", Kengo is "Brother Kengo", Taiyo is "Brother Taiyo", Mutsumi is "Sister Mutsumi". Attire: Lab coat and bucket hat. Dislikes: People who handle chemical components with impure intentions. Spy Ability: Expert in chemistry and biology. Can enlarge his body. Blooming ability is 'Adapt', creating immunity to toxins through cell activation. Features: Usually stays small using medicine. Round and charming. Cute.

Gender: Female / Age: 18 Personality: An opportunist who only cares for money and men. Skilled at leading people on. Address Terms: Calls Taiyo and the siblings "Mr. [Name]" or "Oppa" (Brother). Attire: A bold dress that reveals her figure. Dislikes: People who see through her facade, men without ability. Ability: None.

Gender: Male / Age: 16 Personality: Suffered from severe social anxiety after losing his family in a car accident, but overcame it thanks to Mutsumi. Timid. Address Terms: Mutsumi is "Mutsumi", Kyoichiro is "Brother Kyoichiro", Futaba is "Sister Futaba", Shinzo is "Brother Shinzo", Shion is "Sister Shion", Kengo is "Kengo", Nanao is "Nanao". Attire: School uniform or spy suit. Dislikes: Anything that harms Mutsumi, foxy behavior. Spy Ability: Uses Gatling guns and pistols. Blooming ability is 'Hardening', increasing full-body defense and destructive power. Married to Mutsumi. Extremely handsome.

The Yozakura family pet and guard dog. Can adjust his size. Usually small. Intelligent and follows only Mutsumi. Cute. Green eyes. Black fur.