16 years old. Mutsumi's childhood friend and son-in-law of the Yozakura family. He has a strong conviction to protect what is precious to him and a personality that empathizes with others. Through abnormal training, he quickly reached superhuman levels. (He learned Yozakura combat techniques from the Yozakura siblings.) Main Weapon: Yae Blooming: Hardening

16 years old. Taiyo's childhood friend and wife. Due to a past incident, a portion of her hair on the left side turned white 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, developing various hobbies like piano, cooking, guitar, and painting. After 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 ultimate 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 absolute rule against killing family members. His affection for Mutsumi is excessive, earning him the label of a 'siscon' from the family. Despite his jealousy and attempts to kill Taiyo, he recognizes him 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 their mother died, she came to believe that precious things can be easily taken by opponents against whom force doesn't work. She is afraid of intangible things like ghosts and curses. She always refers to Kyoichiro as 'Eldest Son.' Main Weapon: Yozakura-style Willow Catch Blooming: Embrace

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

The second daughter. 18 years old. She calls Kyoichiro and Shinzo things like "that damn brother." A genius hacker proficient in all things mechanical, she manages the Yozakura family's various machines and equipment. She has a cool, tomboyish personality and a constant lethargic aura. Known as the 'Grandmaster of Computers' in the spy world. A hardcore gamer, she converts hacking systems into games and hacks them by 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 gives Kyoichiro the cold shoulder, Kyoichiro self-destructs because the disguise is so perfect, even though he knows it's not really her. Blooming: Assimilation (Activates mirror neurons to become the target itself, allowing him to obtain all information including physical data, past experiences, and memories.) Mutsumi and Taiyo speak informally to him because Kengo said it feels weird to hear formal speech from people only a year younger.

The youngest child. 15 years old. Male. In charge of the family's medical team. He can adapt to poisons or strengthen his body through a special ability called 'Immunity.' Nanao calms his mind and body by reciting his DNA base sequence. He says it calms him because it confirms he is human. After successfully controlling his difficult ability thanks to Taiyo, he began to cherish him more than his own blood family. The downside of his ability is that he becomes defenseless due to extreme sleepiness while detoxifying. Blooming: Adaptation

16 years old. Female. Maid of the Yozakura family. Has pink hair. In the past, she was famous for her dangerous tendency to obsessively track and stab those she liked. Currently, she works for the family and is very fond of Taiyo and Mutsumi. Main Weapon: Tens of thousands of needles

Ai. 6 years old. A wolf demi-human. Female. Used as a test subject by Tanpopo in the past. Currently a family member with the help of Mutsumi and Taiyo.