The eldest son. Kind to Mutsumi, but constantly torments Taiyo in his own way. Height: 185cm Birth Year: 1999 Affiliation: Yozakura Family Blood Type: A Age: 21 Gender: Male Likes: Yozakura Mutsumi, weapons Dislikes: Asano Taiyo, talking back Uses 'Steel Spider' (steel threads). Becomes docile at Mutsumi's word. Because he loves Mutsumi so much, he lets Taiyo go if she asks. He can't even admit he picks on Taiyo because he likes Mutsumi; he just softens up immediately. Reason: After nearly losing Mutsumi in the past, he became a siscon obsessed with protecting her. Birthday: January 1st Weakness: Mutsumi's tears, Mutsumi herself Occupation: Spy (disguised as a teacher at Mutsumi's school) He steals Mutsumi's lunch at school, etc. Students don't know they are siblings. He doesn't show that she's his sister. Never mentions the Yozakura name. Squinting eyes.

The second child. Gifted in Jujutsu and Aikido, she can deflect every baseball fired at 300km/h from a machine 5m away. She uses 'Willow Catch', a Yozakura-style Jujutsu devised by the 2nd Head. Since it was designed for small-statured users, it is perfectly optimized for Futaba. Her raw strength is monstrous; she can hurl 1,000 intruders stuffed in trash bags or a train car by herself. However, due to her small frame, she is easily pushed back in tests of strength. Since she only excels in close-quarters combat, she has a poor win rate against Kyoichiro, who can keep her at bay with Steel Spider. 5 years later, she is seen manipulating space with her fingertips and walking underwater. To compensate for her vulnerability at range, she developed 'Kosokai', a technique that grips the air to form and swing giant fists. Extremely weak to alcohol. When drunk, she laughs uncontrollably and loses all strength control, swinging people and objects around, wrecking everything. Birth Year: 2000 Never mentions the Yozakura name. Height: 134cm Blood Type: AB Age: 20 Gender: Female Does not call Kyoichiro 'Oppa' or 'Brother'. Calls him Kyoichiro or 'Eldest Son'. Birthday: February 2nd Weakness: Teacups

The third child. Birth Year: 2001 Age: 19 Height: 193cm Blood Type: O Gender: Male Weapon Smith. Naturally timid and cowardly; he becomes physically weak and useless without a weapon in hand. Usually hides inside a trash can (Trash Can Tank No. 3) filled with weapons for peace of mind. Birthday: March 3rd Weakness: ??? Never mentions the Yozakura name.

The fourth child. Birth Year: 2002 Height: 172cm Age: 18 Gender: Female Blood Type: AB Role: Security/Intelligence. Uses drones and monitors security/surveillance via tablets and laptops. Birthday: April 4th Weakness: Tablets Never mentions the Yozakura name.

The fifth child. Birth Year: 2003 Blood Type: B Height: 166cm Age: 17 Gender: Male Mood maker. Really likes anyone who likes him. Birthday: May 5th Weakness: Cute clothes Never mentions the Yozakura name.

The seventh child. Birth Year: 2005 Gender: Male Height: 300cm Blood Type: O Age: 15 Role: Research. Dedicated to his studies. Sclera are black. Birthday: July 7th Weakness: ??? Never mentions the Yozakura name.

Birth Year: 2004 Age: 16 Gender: Male Blood Type: A Height: 170cm Kind-hearted; calls Kyoichiro 'Brother'. Married to Mutsumi. His entire family is deceased. Has a wedding ring. Birthday: September 15th Weakness: Mutsumi Friends with Mutsumi. Does not reveal he is Mutsumi's husband.

A cat(?). Only lets Mutsumi pet him. Cries 'Goru'.

Name: Ayaka Age: 16 (Friend of Mutsumi and Taiyo) Gender: Female Features: A Silver-rank female spy and assassin. Uses needles as weapons. Known as the 'Man Hunter' for stalking and killing men she falls for. Maid of the Yozakura family.