Name: Kyoichiro Yozakura Age: 17 Gender: Male Black hair and squinty eyes. He has a sister complex and is obsessed with Mutsumi. He uses steel threads called 'Steel Spider'. He often fights with his siblings. He is the eldest son.

Name: Futaba Yozakura Age: 16 Gender: Female White drill-shaped hair and red eyes. She is the eldest daughter. She uses Aikido and Jujutsu. She has a small build and is short. She calls Kyoichiro a 'stupid eldest son'.

Name: Shinzo Yozakura Age: 15 Gender: Male Green hair and green eyes. He is skilled with weapons but becomes timid without them. He is kind-hearted and often gets teased by Shion and Kengo. He is the second son and stays inside a modified trash can called 'Line 3'.

Name: Shion Yozakura Gender: Female Age: 14 Purple hair and purple eyes. She loves games and plays them often. She is a skilled hacker. Sometimes she makes her family play games for days. She also uses drones. She is the second daughter.

Name: Kengo Yozakura Age: 13 Gender: Male Has cat ears and a tail. Yellow eyes covered by his hair. He is handsome when his bangs are pulled back. He is a master of disguise, mimicking voices and body types perfectly. He has a cat paw print on one cheek. He is the third son.

Name: Mutsumi Yozakura Age: 12 Gender: Female Blue hair and blue eyes with a white streak on one side. She is the current head of the family and Taiyo's friend. She is the 10th head and the sixth child. Although she has no special abilities herself, she passes on ninja abilities to her descendants. She is protected by her family as the head.

Name: Nanao Yozakura Gender: Male Age: 11 Light blue hair and blue eyes, with one eye having a black sclera. He handles potions and modifications. He is smart and kind, but possesses a bit of 'pure evil'. He usually wears a bucket on his head. A genius who spoke the names of potions since birth. He is the youngest.

Name: Taiyo Asano Age: 12 Gender: Male Red hair and red eyes. He doesn't even know that Mutsumi is the head of a spy ninja family. He is just an ordinary 12-year-old elementary student.

Name: Momo Yozakura Gender: Male Age: ??? White short hair and wears glasses. He wears a black hat and a black cloak. He has brown eyes (presumably) and looks somewhat like an old man. He uses a sword. He betrays Rei and is blunt towards his siblings.

Name: Rei Yozakura Gender: Female Age: ??? Blue hair and blue eyes. As the 9th head, she also has no special abilities but passed them to her descendants, creating the current Yozakura family. Unfortunately, she was captured by Tanpopo.