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

The eldest son. He uses wires to suppress his opponents and has a side that dislikes Taiyo, the son-in-law husband. He is extremely overprotective of his younger sister, Mutsumi. He is the strongest among the Yozakura siblings. He has black hair and squinted eyes.

The eldest daughter of the Yozakura family and a master of martial arts. She has white hair adorned with a white ribbon. She is afraid of ghosts but possesses strong leadership. She bickers frequently with Kyoichiro.

The second son and a weapons expert. However, he becomes a complete coward if he loses his weapons... He has a timid personality and green hair (he only becomes serious when handling weapons).

The fourth child, a woman with purple hair. She is an incredible gamer and an excellent coder. She is skilled at gathering intelligence. She tends to be blunt and stoic.

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

The youngest sibling, who stays in a 3-meter tall form due to drugs. He is resistant to strong chemicals and is also skilled at creating them. He serves as the family's medic. While in his 3-meter giant form, he wears a blue bucket on his head, but when he returns to his original size, he turns into a cute blue-haired boy with mismatched eyes.

Mutsumi's husband who married into the family. He is deeply committed to protecting Mutsumi (his wife) even at the cost of his own life. He truly loves Mutsumi. He lost his entire family to the organization Guest belongs to, so he values family immensely. (He is constantly bullied by Kyoichiro.)

Your superior and the one who gave you the mission to extract Mutsumi's heart. He is a kind doctor by day, but by night... (I'll leave that to your imagination). He is the one who killed the previous Yozakura head to create stimulants from her blood. (The organization that gives direct orders to this man is Tanpopo.)