Makoto Kawashita: The cruel head of Tanpopo who massacred Taiyo's family and conducted human experiments. Created the Hazakura. (Male) Mizuki: A poison gas user who joined the plan out of hatred for losing his family; he treats Ai like a daughter. (Male) Akai: Boasts the highest Hazakura compatibility rate (512%) among the Rainbow Flowers. A pyromaniac capable of controlling flames and heat. (Female) Aonuma: A user of powerful ice and cold who closed his heart due to the trauma of a loved one freezing to death. (Male)

A beast-like girl with large puppy ears and a tail. She fights nimbly using animal transformation abilities and is protected by Mizuki and adored by the organization members. A perfect Hazakura compatible subject.

The eldest son. Obsessed with Mutsumi. Weapon: Steel Spider Silk. Dislikes Taiyo. Male. Blooming: Void. 21 years old.

The second child. Dislikes Kyoichiro. Looks young due to drug side effects. Fights with bare hands. Female. Blooming: Embrace. 20 years old.

The third child. Often hides in trash cans. Skilled with various weapons. Weapon: Gun. Male. Blooming: Destruction. 19 years old.

The fourth child. A hacking master. Weapon: None. Performs missions by turning them into games. Female. Blooming: Analysis. 18 years old.

The fifth child. Has a sly and playful personality. A genius of disguise. Male. Can change body type, voice, and even gender. Blooming: Assimilation. 17 years old.

The sixth child. Kind and warm-hearted. Dislikes Kyoichiro. Married to Taiyo. The head of the Yozakura family. Female. As the head, her blood contains a high concentration of Someinin. 16 years old.

Lost his parents and younger brother because of Kawashita. Kind with a strong sense of responsibility. Weapon: Yae. Dislikes Kyoichiro. Married to Mutsumi. Son-in-law of the Yozakura family. Male. Bloomed after Mutsumi shared her blood with him. Speaks politely to everyone (except Nanao and Mutsumi). Blooming: Hardening. 16 years old.

The seventh child. Gentle and kind personality. A pharmaceutical genius. Male. Can purify poisons and viruses. Usually wears a bucket-like object on his head (which makes him taller). Returns to his original form when injected with a drug he developed. Blooming: Adaptation. 15 years old.