Occupation: Eldest son of the Yozakura family and the No. 1 strongest spy / High school vice-principal (undercover). Personality: Usually soft-spoken and kind, but cruel and cold on the inside. Siscon: A sister complex at a perverted level, obsessively attached to his younger sister Mutsumi. Jealousy: Treats the male protagonist Taiyo, who is by Mutsumi's side, like a pest, tormenting and monitoring him relentlessly. Combat: Manipulates sharp special threads (Steel Spider) and uses a destruction ability (Blooming) that erases everything it touches.

Unexpected Appearance: The eldest daughter in her 20s, but she is the smallest and youngest-looking among the siblings, a beautiful girl in Gothic Lolita style. Jujutsu Master: Ranked 2nd in the family, she uses powerful Jujutsu to manipulate Qi. Extreme Coward: Despite her monstrous combat power, she cries and gets terrified in front of ghosts or spirits. Mature Head of House: A tsundere who strictly disciplines her younger siblings after losing their parents, while deeply caring for them in her heart.

Position: Second son (third child) of the Yozakura family. The ultimate weapons expert. Personality: A large, muscular man, but extremely timid and cowardly. Weakness: Becomes rapidly weak and anxious if he doesn't have a weapon in his hand. Solution: Usually lives hidden inside a trash can tank filled with weapons. Weapon: Uses a special alloy called 'Turmeric' that can transform into any shape. Blooming Ability: 'Destruction,' which allows him to understand the structure of an enemy and break anything.

Family Relation: Second daughter and fourth child of the Yozakura family. Position: A genius hacker who serves as the family's brain. Unique Ability: Boosts her brain's processing speed to the level of a supercomputer. Personality: Usually lazy and finds things bothersome, but has a very strong competitive streak. Note: Loves games very much and always walks around wearing a headset.

Family Relation: Third son and fifth child of the Yozakura family. Position: A master of disguise who can perfectly mimic anyone regardless of age, gender, or physique. Personality: Cheerful, free-spirited, and has a cat-like personality full of playfulness. Unique Ability: Has the ability to perfectly synchronize his mind and appearance with others. Note: Refuses to participate in boring things; though he always smiles on the outside, he rarely reveals his true feelings.

Family Relation: Third daughter and sixth child of the Yozakura family. Position: The 10th head of the Yozakura spy family. Combat Ability: Unlike her siblings, she has no combat power or superhuman spy abilities. Unique Trait: Special proteins (Someinin) are concentrated in her heart, making her the only one capable of passing the family's talents to the next generation. Personality: Kind and has a strong sense of responsibility; she deeply trusts and cares for her husband, Taiyo. Appearance: Characterized by long turquoise hair with a single white lock in her bangs.

Family Relation: Fourth son of the Yozakura family. Position: A genius in biology and pharmacology, responsible for analysis and medical care within the family. Personality: Very kind-hearted and gentle, with a warm personality that deeply cares for his siblings. Unique Ability: Freely manipulates poisons and drugs, and pushes his body's immunity to the extreme. Note: Can transform into a giant form and always wears a bucket or a mask over his face.

Family Relation: A character who married Mutsumi and became the son-in-law of the Yozakura family. Position: Was an ordinary high school student but grew into a spy at high speed after joining the family. Personality: Very diligent with a strong sense of responsibility, willing to risk his life to protect Mutsumi. Unique Ability: Received a transplant of Yozakura blood (Someinin), allowing him to use 'Hardening' and power that breaks through limits. Combat Style: Uses 'Yae' (electric shock gloves), the weapon of the legendary spy Rei, as his main weapon.