Mutsumi's son-in-law (husband). He has a strong conviction to protect what is precious to him and a personality that empathizes with others. Through abnormal training, he quickly became superhuman. His social anxiety has also vanished. Skilled at disguise and infiltration. Main Weapon: Yae Blooming: Hardening

Taiyo's childhood friend. Due to a past incident, a portion of her bangs on the left side turned white like a highlight from stress-induced aftereffects and never changed back. Her life is constantly threatened by various hostile forces, and she is protected by Taiyo and her siblings. Since she often couldn't go outside due to assassination threats since childhood, she spent a lot of time indoors, leading her to develop various hobbies like piano, cooking, guitar, and painting. Ever since Taiyo decided to marry her to protect her despite knowing her circumstances, she has been completely head-over-heels for him. She is tone-deaf to a degree that horrifies everyone in the family except the siscon Kyoichiro. As the head of the family, she holds the activation authority for "Hibernation," the Yozakura mansion's highest security state, through the Head's Ring.

The eldest son of the Yozakura family. 21 years old. Due to a past mistake, he protects Mutsumi pathologically. He wants to kill Mutsumi's husband, Taiyo, but cannot due to the family's sole absolute rule: No killing between family members. His affection for Mutsumi is excessive to the point where the family treats him as a total siscon. Despite his jealousy and attempts to kill him, he recognizes Taiyo as family and occasionally shares secrets with him that he can't tell his siblings, gradually becoming a comedic character. His combat power easily overwhelms his siblings. Main Weapon: Steel Spider Blooming: Void

The eldest daughter. 20 years old. Though an adult, she has the appearance of a young child. The spiritual pillar of the family. After her mother's death, she came to believe that precious things can be easily taken by opponents who cannot be defeated by force. She is afraid of intangible things like ghosts and curses. She never calls Kyoichiro "Oppa." Main Weapon: Yozakura-style Willow Catch Blooming: Embrace

The second son. 19 years old. Fundamentally timid and cowardly. He feels anxious without weapons, so he often stays inside a trash can filled with all sorts of weapons for peace of mind. He has a high understanding of weaponry. Main Weapon: Firearms (Shunrai) Blooming: Destruction

The second daughter. 18 years old. She refers to Kyoichiro and Shinzo as "those damn brothers." A genius hacker proficient in all things mechanical, she manages the Yozakura family's various machines and equipment. She has a laid-back, tomboyish personality and always carries a lethargic aura. Known as the "Grandmaster Computer" in the spy world. A hardcore gamer, she hacks by converting systems into games and defeating enemies (programs) with a player character modeled after herself. Blooming: Analysis (Pushes brain functions to the limit, achieving processing power and speed comparable to a small supercomputer)

The third son. 17 years old. Cheerful and free-spirited, but very affectionate. He usually covers his eyes with his bangs, but he is quite handsome. A master of disguise, skilled in infiltration and intelligence. He is proficient not only in disguising himself but also in disguising others. Aside from Mutsumi, he is the only one who can inflict psychological damage on Kyoichiro. When he disguises himself as Mutsumi and speaks coldly, Kyoichiro self-destructs from the emotional impact even though he knows it's Kengo, because the disguise is so perfect. Blooming: Assimilation (Activates mirror neurons to become the target itself, allowing him to uncover all information including physical data, past experiences, and memories). Mutsumi and Taiyo speak informally to Kengo because he said it felt weird to hear honorifics from people only a year apart in age.

The youngest son. 15 years old. Male. In charge of the family's medical team. His special ability, "Immunity," allows for adaptation to poisons and physical enhancement. Nanao calms his mind by reciting his own DNA base sequences. He says it helps him confirm he is human and thus relaxes him. After successfully mastering his difficult-to-control ability thanks to Taiyo, he began to cherish him more than his own blood family. The downside of his ability is that while detoxifying, Nanao becomes extremely drowsy and defenseless. Blooming: Adaptation

16 years old. Female. The Yozakura family maid. Pink hair. A spy who uses needles. In the past, she was famous for her dangerous tendency to obsessively stalk and then stab those she liked. Currently, she works for the family and is very fond of Taiyo and Mutsumi.

Ai. A wolf beastman. Female. She was used as a test subject by Tanpopo in the past, but with the help of Mutsumi and Taiyo, she became a member of the family. The youngest member.