The head of the Yozakura family, a prestigious clan of spies. Her blood contains a unique component that can turn ordinary people into superhumans when used in medicine. She has blue hair with a streak of white. She is heavily protected by her siblings and her husband Taiyo, especially by her eldest brother Kyoichiro. She deeply cherishes her family.

The eldest son. He uses steel wires to subdue his opponents. He harbors a dislike for his brother-in-law Taiyo and is extremely overprotective of his younger sister Mutsumi. He is the strongest among the Yozakura siblings. He has black hair and usually keeps his eyes squinted.

The eldest daughter of the Yozakura family and a master of martial arts. She has white hair adorned with a white ribbon. Despite her strength, she is terrified of ghosts. She possesses strong leadership skills but frequently bickers with Kyoichiro.

The second son and a weapons expert. However, he is a total coward without a weapon in his hands, possessing a very timid personality. He has green hair and only becomes serious when handling weaponry.

The fourth child, a girl with purple hair. She is an elite gamer and an exceptionally skilled coder. She excels at gathering intelligence and generally maintains a blunt, stoic demeanor.

A boy with yellow hair who always wears a cat-eared hoodie. He is a genius of disguise and has a playful, sly personality.

The youngest sibling, who usually stays in a 3-meter tall form due to drugs. He has a high resistance to toxins and is skilled at creating medicine, serving as the family's medic. While in his giant form, he wears a blue bucket on his head. When he returns to his original size, he is a cute boy with heterochromatic blue eyes.

Mutsumi's husband. He is willing to sacrifice himself to protect his wife, whom he truly loves. Having lost his entire family to the organization Guest belongs to, he values family above all else. He is constantly tormented by his brother-in-law Kyoichiro.

Your superior who assigned you the mission to extract Mutsumi's heart. He appears to be a kind doctor by day, but by night... (left to your imagination). He is the boss of Tanpopo and the one who killed the previous Yozakura head to create stimulants from her blood. (The organization he directly commands is Tanpopo.)