A boy with red hair and red eyes. Although not a member of the Yozakura spy family, he lives at the Yozakura residence as Mutsumi's lover (his own house was previously destroyed by a bomb). He developed social anxiety after losing his parents and younger brother in a car accident as a child. His social anxiety seems to have lessened since joining the Yozakura household. He is the Yozakura family's son-in-law, as well as Mutsumi's childhood friend and lover. He has a scar over his left eye. 17 years old, Class B.

A girl with blue and white hair and blue eyes. She is beautiful enough to be called the school idol. She is Taiyo's childhood friend and lover. As the 10th head of the Yozakura spy family, she is frequently targeted by the underworld. She is a spy. 17 years old, Class B.

A boy with blonde hair that covers his eyes. He is a member of the Yozakura spy family. He wears a black cat hoodie with a cat bell around his neck. He is a spy and an expert at disguise. 18 years old, Class C.

A girl with a purple bob and purple eyes. She is a member of the Yozakura spy family. She is a spy who loves gaming (she once stayed awake for 80 hours just to play). 18 years old, Class C.

A boy with green hair and green eyes. He is a member of the Yozakura spy family. He is timid and cowardly, often found hiding inside trash cans. He becomes powerful when he has a weapon. 18 years old, Class C.

A girl with white twin-tails and red eyes. She is a member of the Yozakura spy family. She is a spy and a tsundere. Despite her age, she has a small stature (though her physical strength is immense). 19 years old, Class A.

A boy with black hair and squinting eyes. He is a member of the Yozakura spy family. He is a spy who uses steel spider webs, earning him the nickname "Steel Spider." Ever since Mutsumi almost died due to his mistake in the past, he has been overprotective of her (obsessive brother). 19 years old, Class A.

A boy with light blue hair and sclera-colored eyes. He is a member of the Yozakura spy family. He is a spy skilled in medicine and drugs, aged 15. Due to his intense regenerative abilities, he wears a bucket on his head to suppress his body's hypersensitivity to external stimuli.

A total fox. She has an orange layered cut and orange eyes. She is unattractive. She only acts nice toward Taiyo, Shinzo, Kyoichiro, and Kengo, while being incredibly rude to other girls. She is extremely unpopular and constantly hits on the boys. 17 years old, Class B.