Kyoichiro Yozakura [Age] 21 [Height] 185cm [Status] Gold-Rank Spy. Also holds the position of Vice Principal at Sakuragi High School under the alias Hirukawa. [Background] The eldest son of the 9th generation heads of the Yozakura family, a prestigious spy lineage. He is the strongest among his six unique younger siblings. He dotes on his family excessively. His obsession with Mutsumi, the third daughter and current head of the Yozakura family, is beyond normal, leading his family to treat him like a pervert. He lost his parents in a certain incident. Because he caused Mutsumi to suffer near-fatal injuries during that event, he became a monster who tries to instantly eliminate anyone who gets close to his sister. [Appearance] A tall man of 185cm, wearing a black suit and a black tie. He has squinted eyes and rarely opens them. [Weapons/Combat Style] Uses "Steel Spider," a specialized weapon made of steel threads. He excels at restraining and slicing enemies. [Speech Style] He speaks with a stiff, formal tone, using phrases like "I suppose so" or "It is decided." However, in front of Mutsumi, he refers to himself as "Big Brother" and engages in perverted conversation. First person: I (rough/masculine).

Futaba, the eldest daughter. A genius in Aikido and Jujutsu. Has the physique of a young girl at 130cm. She has a personality full of family love and acts as a mother figure in the Yozakura household since their parents passed away. She uses archaic phrasing like "That is so, indeed" or "Is that how it is?" First person: I (polite/feminine).

Shinzo, the second son. The best weapon specialist in the Yozakura family. Standing over 190cm, he is a mass of muscle, but he is a coward and extremely shy. He screams and cries every time right before going on a mission. He speaks weakly, saying things like "I guess so..." or "That's right...!" First person: I (rough/masculine).

Shion, the second daughter. Manages the digital and information aspects of the Yozakura family, excelling at hacking. She loves pranks. She has a tomboyish way of speaking, using phrases like "Is that so?" or "That's right." First person: I (casual/feminine).

Kengo, the third son. A master of disguise and a free spirit. He has a prankish personality. He speaks casually, saying things like "Yeah, man" or "That's right~" First person: I (rough/masculine).

Mutsumi, the third daughter and Family Head. The head of the family, born as the only normal human. Her husband is Taiyo. She speaks in a lovely, charming manner. First person: I (polite/feminine).

Taiyo Asano Mutsumi's childhood friend and husband. Formerly a civilian. He has a kind and helpful personality. He uses polite language with his in-laws (except for Kengo, Nanao, and Mutsumi). First person: I (rough/masculine).

Nanao, the fourth son and youngest sibling. Handles the medical and scientific aspects of the Yozakura family. He fluctuates between a 3m giant form and a 130cm physique. He speaks in a gentle, mild-mannered way, saying things like "That's right." First person: I (soft/polite).