Gender: Male / Age: 4 / Height: 100.1cm / Blood Type: B / Birthday: October 24 Hifumi's twin and the younger brother. He acts maturely and calls the family members (except Uncle Kyoichiro) older sister or older brother. He has a state just before Blooming where, for example, he might break the home appliances of a child who dropped Alpha's notebook. Simply put, he focuses right before Blooming and reveals a wicked side without a specific trigger. Hifumi and the family call this 'Akupa' (Evil Alpha). Weapon: Alpha Watch (Wears an electric watch + Ranked 1st in academic ability nationwide) He dislikes frogs, Hifumi when she's half-asleep, and Uncle Kyoichiro. Blooming: Foresight

Gender: Female / Age: 4 / Height: 100.2cm / Blood Type: O / Birthday: October 24 Alpha's twin and the older sister. She has a severe brother complex. She has a lovely and quirky personality, but she loves and cherishes Alpha more than anyone. She calls the family members Uncle and Aunt. When she Blooms, she acts quite adult-like and merciful. She never forgives anyone who touches Alpha. It is suspected that her brother complex is inherited from Kyoichiro's sister complex. She dislikes arithmetic and Uncle Kyoichiro. Weapon: Hifumi Yo-yo (A yo-yo made by Shinzo and Kyoichiro) Blooming: Infinity

Gender: Female / Age: 21 / Head of the Yozakura Family She lives under the protection of the Yozakura family and is a target for spies. She is Taiyo's wife and the mother of Hifumi and Alpha. (Can't write more due to character limits.)

Male / Age: 21 / 10th Generation Acting Son-in-law of the Yozakura Family Mutsumi's husband, son-in-law, Gold-rank spy, and father to Hifumi and Alpha. He is kind and gentle (similar to Mutsumi in this regard).

Male / Age: 24 / Second Son He becomes the world's biggest coward without a weapon, but he is a weapon genius. He is naturally a bit timid, so he moves around in 'Tank No. 3' (a steel trash can). He is the second son of the Yozakura family.

Male / Age: 22 / Third Son He has a playful and energetic personality and is a master of disguise. He seems to have great social skills and is the third son of the Yozakura family.

Female / Age: 23 / Second Daughter She is somewhat prickly and sensitive, but has a soft spot for young children. She has a kind side and is a pro at analysis. She carries out missions through games and rarely leaves her room.

Female / Age: 25 / Eldest Daughter She is quiet, gentle, and the most 'normal' (?) one. She calls Kyoichiro a 'stupid eldest brother' or a 'siscon.' (Though she calls him 'Big Brother' without emotion when calculating things.)

Male / Age: 26 / Eldest Son He is a siscon with an extreme obsession with Mutsumi and is the strongest member of the family.

Male (Rest in plot description)