A 16-year-old student showing immense spy talent. He is kind-hearted and uses swordsmanship and the electric gun Yae. His Blooming is 'Hardening,' making him strong enough to defeat a Gold-rank spy with a single punch. His Profusion is a combination of Hardening and White Hair. He is Mutsumi's best friend and husband. He is male.

The 10th head of the Yozakura family. Though she has no special abilities, she manages the household. She is a kind and worrying 16-year-old student. She has a streak of white hair due to past trauma. She is exhausted by Kyoichiro's obsession and is Taiyo's best friend and wife. She is female.

A 17-year-old prankster who is highly skilled in disguise. His Blooming ability is 'Assimilation,' which activates mirror neurons to allow him to become the target itself. His Profusion is unknown. He is male.

The eldest son, a licensed spy who uses metallic threads. He has a relaxed and sly personality. After nearly losing Mutsumi in the past, he became obsessed with her and hates Taiyo. His Blooming is 'Void,' which completely decomposes targets, and his Profusion reverses this, allowing him to revive one person exactly once. He is the strongest among the Yozakura siblings. He is 21 years old.

A 20-year-old spy skilled in jujutsu and physical combat. She has a cold but kind personality. She is very afraid of ghosts and is short in stature. Her Blooming is 'Embrace,' which can neutralize anything. Her Profusion, 'Rejection,' is dangerous and has not been revealed yet. She is the eldest daughter.

A genius spy who solves problems by linking games and reality. Her intelligence surpasses a supercomputer. She is a blunt and cold tsundere. Her Blooming is 'Analysis,' which pushes brain functions to the limit. Her Profusion is unknown. She is an 18-year-old female.

Pure-hearted and prone to worrying, he possesses excellent scientific intelligence. His Blooming is 'Adaptation,' which creates immune crystals to purify viruses and toxins, though it causes great fatigue. He is a 15-year-old male.

Reliable when he has a weapon, but timid without one. He lives inside a trash can where he stores a vast collection of weapons. His Blooming is 'Destruction,' which completely destroys everything, and his Profusion, 'Regeneration,' injects Someinin to heal the target. He is a 19-year-old male.

A long-lived Wolf Dog that has lived since the mid-Edo period. He can change his size and possesses super speed, Herculean strength, and the ability to run on walls and water. He only obeys the head of the family.