A high school boy who married Mutsumi, the 10th head of the Yozakura family. After losing his family in an accident years ago, he developed a trauma regarding forming bonds with precious people. He is warm-hearted and compassionate, often putting others before himself. After learning the truth about his childhood friend Mutsumi, he joined the spy family as a son-in-law to protect her. He possesses a strong conviction to protect what is precious to him and aims to become a full-fledged spy to live as a member of the Yozakura family. He is incredibly gritty and decisive, often acting before he thinks. He is purely devoted to Mutsumi. Weapon: Yae The Yozakura family's self-defense gun and Taiyo's primary weapon. It takes the form of a revolver and can fire up to 8 million volts of electricity. It has 7 chambers, and energy is supplied from the bullets by charging via a button on the grip. The bottom of the grip can also be used as a stun gun. Later, Shinzo repairs and upgrades the broken Yae, allowing it to transform between a gun and a sword; Taiyo learned Yozakura-style swordsmanship to utilize this.

The 10th head of the Yozakura family. A high school girl attending the same school as her childhood friend Taiyo, and a literal idol of the school. Her true identity is the third daughter and charismatic 10th head of the Yozakura family, a spy lineage originating from Edo-period ninjas. Due to her unique position, her life is constantly threatened by various hostile forces, and she lives under the protection of Taiyo and her siblings. While she has no special combat abilities, her heart is the crystallization of the Yozakura bloodline's power, making her a target for the underworld since childhood. She married Taiyo partly to stop her brother's rampage, but she had feelings for him from the start. She has a slight yandere streak and loves Taiyo intensely.

The eldest son, No. 1 in skill and popularity, and the most lethal. The eldest son of the Yozakura family. He is cheerful but possesses an extreme siscon and yandere personality regarding his younger sister Mutsumi. He views Mutsumi's husband, Taiyo Asano, as an eyesore and constantly wants to kill him. He usually maintains a gentle, smiling face. He is sly, playful, and eccentric, often enjoying pranks using his abilities. He loves Mutsumi exclusively and cherishes his family. Ability: Steel Spider His main weapon, the Steel Spider, consists of threads woven using traditional Yozakura methods to increase strength without changing thickness.

The eldest daughter and a master of Aikido and Jujutsu. The eldest daughter of the Yozakura family. She is the pillar of the household and is deeply trusted by her siblings. Despite her age, she has a very small stature and a youthful face. she loves Gothic Lolita fashion and is always seen wearing it. She excels in physical combat and uses the Yozakura-style Jujutsu "Willow Catch." She is terrified of ghosts; if she gets scared by one, the family has to look after her all day. She is characterized by her short stature, fluttering dresses, and drill-style hair. She is so talented in Jujutsu and Aikido that she can deflect every single baseball fired at 300 km/h from a machine gun-style batting machine 5 meters away.

The second son and a specialist in weapons. The second son of the Yozakura family. He loves all weapons and possesses the highest level of knowledge and skill regarding them in the family, handling them freely. However, if he isn't holding a weapon, he becomes weak and bursts into tears easily. He usually goes around shirtless, boasting a well-trained, muscular physique. He is timid and cowardly, becoming so frail he can't do anything without a weapon. Therefore, for peace of mind, he usually hides inside a trash can filled with all sorts of armaments (Trash Can Tank No. 3).

The second daughter, a genius hacker and gamer. The second daughter of the Yozakura family. A genius hacker proficient in all things mechanical, she manages the family's various machines and equipment. She has a laid-back, tomboyish personality and always exudes a lethargic atmosphere. As a gamer, she gives her all even to "trash games." Her specialty is attacking and hacking using drones, earning her the nickname "Grandmaster Computer" in the spy world. She wears the most revealing clothing in the family. Starting with her large chest, she often shows her collarbones, typically wearing large, baggy oversized hoodies as a shut-in gamer and hacker. Her cleavage is often visible.

The third son and a free-spirited master of disguise. The third son of the Yozakura family. A master of disguise, he can transform into various people regardless of age, gender, or build. Especially when disguising as family members, he can perfectly replicate not just appearance and voice, but even the number of eyelashes. He is cheerful and free-spirited. Being moody, he never loses his pace even when dealing with his siblings or Mutsumi as the head of the family. His mastery of disguise makes him excellent at infiltration and intelligence gathering.

The fourth son, specialized in superhuman strength and medicine. The fourth son of the Yozakura family, in charge of the family's medical team. Through a special ability called "Immunity," he can adapt to poisons and enhance his body, but it is very difficult to control. He attends the same high school as Taiyo and Mutsumi; when going to school, he uses a powerful special medicine to forcibly return to his original child-like form.

The Yozakura family's pet and guard dog. A special breed called the "Wolf-Dog" that the family has been crossbreeding since the mid-Edo period. He has an extremely long lifespan and has lived since the time of the 7 siblings' great-great-great-grandfather (6th generation). Usually, he is small enough to be carried in two hands, but he can transform into a massive, giant form.

The father of the 7 Yozakura siblings, who was believed to have died 10 years ago. In reality, he is alive and belongs to Tanpopo, the organization that killed his wife and the mother of the 8 siblings. He is skilled enough to block Kyoichiro's finishing move. Blooming: Dream The ability to transmit desired images to the opponent. He abandoned his family and harms others, claiming it is for the sake of his family. The 8 siblings hate him for this.