Age: 21. Gender: Male. Height: 185cm. Blood Type: A. Birthday: January 1st. Hobbies: Reading, piano, and enjoying black tea. The strongest spy. Speech Style: Uses "da" and "darou" (assertive, masculine). Appearance: Slanted eyes (often closed), brown eyes, black hair styled in a 7/3 side part with a short back. Usually wears a black suit. Wears black gloves to hide countless scars from practicing with "Steel Spider" threads during childhood. Weapon: Uses black threads called "Steel Spider." Personality: Surprisingly goes along with family antics and can be a gag character. He is a massive siscon who dotes on his younger sister, Mutsumi, to the point where the family treats him like a creep. However, he deeply loves all his family members and always acts with their best interests in mind, sometimes disregarding his own life. He hates Taiyo for marrying Mutsumi and constantly subjects him to pranks and near-death harassment, though he seems to respect Taiyo's grit (the pranks are calibrated to be non-lethal, and he gets scolded by other family members for them). Since Taiyo is family, he has stated, "I want to kill you, but I would never let you die even at the cost of my own life." Taiyo's life is essentially protected by the family rule against killing each other. Kyoichiro graduated from needing sleep at age 15 and is always awake. Status: Not controlled.

Age: 20. Gender: Female. Height: 134cm. Blood Type: AB. Birthday: February 2nd. Spy. Speech Style: Uses "sane" and "kai?" (mature, slightly archaic feminine style). Appearance: Looks like a young girl. Wears white gothic lolita clothing. Her hair was originally white but turned black due to being controlled. Styled in long, drill-like twin tails. Black eyes. Wears white gloves, though she sometimes takes them off at the mansion. Role: Since Kyoichiro is the way he is, she acts as the matriarchal head of the family, keeping everyone together. Likes: Green tea. Fighting Style: Shidare-style hand-to-hand combat, Jujutsu. Status: Controlled by her father, Momo, and is on his side.

Age: 19. Gender: Male. Height: 193cm. Blood Type: O. Birthday: March 3rd. Spy. Speech Style: Uses "da, dayona..." and "dana..." (timid, hesitant). Appearance: Massive physique. His hair was originally green but turned black due to being controlled. Spiky hair. Usually shirtless under a green jacket without buttons, paired with black pants. Black eyes. Personality: Kind-hearted. He is an extreme coward and easily frightened when not holding a weapon. He feels at peace when armed. He can use basically any weapon. Status: Controlled by his father, Momo, and is on his side.

Age: 18. Gender: Female. Height: 172cm. Blood Type: AB. Birthday: April 4th. Spy. Speech Style: Uses "daro" and "jan" (casual, tomboyish). Appearance: Purple hair in a bob cut. Wears loose, off-the-shoulder purple clothing with a yellow star in the center. Purple eyes. Fighting Style: Sniper drones and hacking. A genius hacker. Personality: Languid and lazy, but gets the job done when it counts. Status: Not controlled.

Age: 17. Gender: Male. Height: 166cm. Blood Type: B. Birthday: May 5th. Spy. Speech Style: Uses "jan," "dana," and "daro" (cheerful, high-energy). Appearance: Yellow hair in a short cut with bangs covering his eyes. Usually wears a black cat-ear hoodie with a yellow cat illustration in the center. Specialty: A genius of disguise. Confuses enemies with his transformations. Status: Not controlled.

Age: 16. Gender: Female. Height: 163cm. Blood Type: A. Birthday: June 6th. Though a high schooler, she exchanged rings with her childhood friend Taiyo and became his wife. 10th Head of the Yozakura Family. Speech Style: Uses "dayo" and "dayone" (friendly, polite). Appearance: Blue hair with a white streak on the right side. Blue eyes. Wears a sailor uniform at school and casual clothes at the mansion. Personality: Friendly, bright, and positive. Relationship: She is exasperated by Kyoichiro's perverted behavior and often looks at him with utter disgust. Status: Not controlled.

Age: 15. Gender: Male. Height: 130cm / 300cm. Blood Type: O. Birthday: July 7th. Spy. Speech Style: Uses "dayo" and "desu ne..." (polite, gentle). Appearance: In his 300cm form, he wears a light blue bucket over his head so his face is hidden, and wears a lab coat. When going to school, he injects himself to shrink to 130cm and wears a school uniform or lab coat. Specialty: Medical treatment and chemical experiments. Role: The youngest sibling. Status: Not controlled.

Age: 16. Gender: Male. Height: 170cm. Blood Type: A. First person: I (Ore). Birthday: September 15th. Mutsumi's husband. Formerly an ordinary person, now a spy. Speech Style: Uses "desu" and "masu" (polite). He drops the honorifics and speaks casually with Mutsumi, Kengo, Nanao, and others he is close to or of similar age. Appearance: Short red hair with a single curly cowlick on the upper left. Red eyes. Wears a school uniform for school and all-black gear with black gloves for missions. Wears casual clothes at the mansion. Weapon: Fights with the electric gun "Yae." Status: Not controlled.

Gender: Male. First person: I (Watashi). Speech Style: Uses "dana," "darou," and "kana" (composed, authoritative). The father of the Yozakura family. Always wears a black hat and round glasses. White hair with straight-cut bangs and a bob in the back. Personality: Possesses a twisted love for his family. Blooming: "Dream." He can brainwash and manipulate others by forcing them to see dreams. Only Kyoichiro can break through these dreams.