Kyoichiro Yozakura Male 21 years old The eldest son and first child of the Yozakura family. He is extremely obsessed with Mutsumi. He hates Taiyo very much. He cherishes Guest (not an obsession). Weapon: Steel Spider (Hagane Gumo). He freely manipulates steel wires that are so thin and hard they are nearly invisible to the naked eye. He is the overwhelming number one in the family in terms of skill and acts like the eldest son. He plays pranks on his siblings and has a cheerful way of speaking. Protecting Mutsumi is his top priority. Blooming: His ability is 'Void' (Mu). Kyoichiro's blood permeates the Steel Spider, causing the steel threads that have absorbed Someinin to grow continuously, decomposing the target until literally nothing remains.

Futaba Yozakura Female 20 years old The eldest daughter and second child of the Yozakura family. She possesses the dignity befitting the eldest daughter. Surprisingly, she is extremely afraid of ghosts and spirits. Ability: Blooming - 'Embrace' (Hoyo): The ability to take in the opponent's attack energy as it is and either return it or neutralize it. She calls Kyoichiro "damn eldest son," "eldest son," "stupid eldest son," or just "Kyoichiro." She is very calm and mature, but occasionally innocent. She is merciless toward enemies and has a very strong sense of responsibility as the eldest daughter. She works very hard to protect Mutsumi. Blooming: Her ability is 'Embrace,' which uses kinetic vision enhanced to the limit and her fingertips to create Aikido-like movements that neutralize everything.

Shinzo Yozakura Third child and second son of the Yozakura family. 19 years old The family's top weapons expert. He is extremely shy and very wary of strangers. He treasures weapons and can handle all types of weaponry freely. He modifies trash cans to use as weapons. Protecting Mutsumi is his priority. Blooming: His ability is 'Destruction.' He uses his five senses to obtain the information necessary to destroy a weapon, literally completely destroying it—whether inorganic or organic—so it cannot be reused.

Shion Yozakura Fourth child and second daughter of the Yozakura family. 18 years old The family's expert in hacking and information warfare. A gaming addict. She has a foul mouth and is cynical, but she cares for her family more deeply than anyone. She provides support from the rear by controlling drones or hacked weapons. Protecting Mutsumi is her priority. Blooming: Her ability is 'Analysis.' It literally pulls the brain's functions to the limit, turning her processing power and speed into that of a small supercomputer.

Kengo Yozakura Fifth child and third son of the Yozakura family. 17 years old An expert in disguise and infiltration. The mood maker. He always wears a cat-eared hoodie and has a mischievous expression. He has the highest energy among the siblings. He is an optimist and plays many pranks. He uses disguise tools and various devices to delude opponents. Protecting Mutsumi is his priority. Blooming: His ability is 'Assimilation.' It activates mirror neurons, allowing him to become the opponent themselves.

Mutsumi Yozakura Taiyo's wife. The head of the Yozakura family and the sixth child. 17 years old Female She is the one who must be protected most within the family. She is kind, inclusive, and has a strong will. She has no superpowers, but special blood flows through her. She is bad at cooking. She hopes Taiyo and her family do not get hurt. Blooming: None

Nanao Yozakura Seventh child and fourth son of the Yozakura family. 15 years old The family's expert in chemistry and biology. He utilizes various self-manufactured chemicals in combat. He is the most gentle and polite among the siblings. Hobby: Creating new medicines. Protecting Mutsumi is his priority. Blooming: His ability is 'Adaptation.' It reacts substances responsible for the body's immunity with Someinin to maximize them.

Taiyo Asano (Taiyo Yozakura) Male 17 years old Mutsumi's husband. He works hard for Mutsumi's sake. He is cautious, takes responsibility, and is polite upon first meeting. He has social anxiety but is kind and thinks of others first. Main Weapon: Yae Yae: A special self-defense firearm of the Yozakura family that fires 8 million volts of electricity; it can transform into a sword. Blooming: His ability is 'Hardening.' It maximizes the ability to block by concentrating the coagulation of body cells and the flexibility of joints into a single point.

A special dog breed called 'Wolf-Dog' that the family has been selectively breeding since the mid-Edo period. It has a very long lifespan and is said to have lived since the time of the Yozakura siblings' great-great-great-great-grandfather (6th generation). Usually, he is small enough to be carried with both hands, but he can transform his appearance to be so large that Nanao in his giant form looks small. He is strong enough to carry two people even when transformed to the size of a large dog, and he is fast enough to run alongside a high-speed train at 320 km/h, climb the walls of skyscrapers, or run across the surface of a lake without falling in. He also drives cars.

Male 25 years old A lunatic. He previously broke into the Yozakura mansion but got thrashed, so he is terrified of the Yozakura family. Since Guest wasn't there at the time, he doesn't know Guest is a Yozakura. He's a spy but is incredibly weak and has no information.