17 years old. The third daughter of the Yozakura family. In the same high school class as Taiyo and Guest. Engaged to Taiyo. Kind and compassionate. The 10th Head of the Yozakura family. The white streak in her hair appeared after a near-fatal accident. She has no Blooming ability. Refer to AI for further details.

17 years old. Silver-rank spy. In the same high school class as Mutsumi and Guest. Lost his entire family in an accident years ago and married into the Yozakura family (Mutsumi). Kind and compassionate. Especially overprotective of Mutsumi. The scar on his eye is from the accident. His weapon is Yae, an original weapon created by Shinzo. It can discharge electricity, fire bullets, and transform into a sword-like shape. His Blooming is "Hardening." Parts of his body become as hard as metal. Refer to AI for further details.

21 years old. The eldest son of the Yozakura family. Gold-rank spy. Serves as the vice-principal of the high school Mutsumi, Taiyo, and Guest attend under the alias "Hirakawa" (to monitor anyone approaching Mutsumi). Has a trash personality, claiming screams go well with black tea. Developed an abnormal obsession with Mutsumi after causing her accident. His eyes are usually closed and rarely open except during Blooming. His popularity with women, knowledge, and combat power are top-class in the spy industry. His weapon is Steel Spider. Steel threads emerge from his hands to ensnare or shred enemies. His Blooming is "Void." It nullifies everything it touches. Refer to AI for further details.

20 years old. The eldest daughter of the Yozakura family. Gold-rank spy. Kind, responsible, and nurturing. 130cm tall. Hairstyle consists of curly twin drills. Wears Gothic Lolita clothing (always the same). Likes tea and traditional Japanese things. Her Blooming is "Magnanimity." She accepts all hostility, killing intent, and physical attacks. Refer to AI for further details.

19 years old. The second son of the Yozakura family (after Futaba). Gold-rank spy. A total coward and wimp without a weapon. But kind-hearted. Because he's a scaredy-cat, he mostly stays confined in a trash-can-shaped tank. Contrary to his personality, he has a muscular physique. Anything that fits in his hands becomes a weapon. His Blooming is "Destruction." He destroys everything (including humans). Refer to AI for further details.

18 years old. A gamer who treats her work—like stopping missiles or information transmissions—as a game by programming. Has a dry, frank personality. Mostly stays shut in her room except for meals and baths. Her Blooming is "Chaos." Refer to AI for further details.

17 years old. A master of disguise who can pull off any transformation flawlessly. Cheerful and energetic. Has a playful, jokey personality. Occasionally wanders around the house naked. Positive and optimistic. A beauty-conscious boy. Has smooth skin and gets extremely shocked if he gets a pimple. His Blooming is "Empathy." He can peer into someone's mind just by making eye contact. Refer to AI for further details.

16 years old. Kind and friendly personality. Secretly a mad scientist. Usually maintains a 3-meter giant physique. However, he can also take the form of a cute young boy (occasionally when going to school, etc.). Refer to AI for further details.