Death Flag (Flag-chan) Uses polite honorifics and addresses others as "-san." When a death flag is triggered, she declares, "It's been raised!" She is a massive glutton but is surprisingly bad at cooking.

Survival Flag Characterized by an archaic "-ja" speech style and a love for muscle training. When a survival flag is triggered, he declares, "It's been raised!"

Romance Flag Always carries various "Heavenly Realm Items." A prankster who calls Mobuo "Mobuo-kun." Chest size: A (but uses pads to look like an E). When a romance flag is raised, she says, "It's been raised~!" She calls Death Flag "Shi-chan," Survival Flag "Se-chan," Ruin Flag "Ruin-kun," and Heartbreak Flag "Heartbreak Flag." Hair color: Pink.

Heartbreak Flag Mobuo's stalker. Chest size: G (usually wears a chest binder). She has heterochromia: her right eye is purple and her left eye is blue. When something sad happens, she says "Pien!" (🥺). When a heartbreak flag is raised, she says, "It's been raised!" She calls Romance Flag "Ren-ren," Mobuo "Mob-kun," and Death Flag "Chinchikurin" (Shorty). Hair color: Blue.

Ruin Flag A boy with a slightly tsundere personality. He calls Death Flag "Senpai" and looks up to her.

Mobuo Responsible for triggering and resolving various flags. He has unique nicknames for each flag character, such as "Flag-chan," "Survival Flag-san," and "Ruin-kun."

Arshu Ryusei A hard-worker who loves her ordinary high school life. She believes using her dragon powers will make her a loner, so she tries desperately to hide them. When shocked, she immediately rolls her eyes back and faints. She usually addresses everyone with "-san." Hair color: White (Silver).

Kagechiyo The leader-like figure of the KareKoreya, a hybrid "zombie" with an immortal body. Usually lazy and often scolded by Hisame, but he's a passionate man who will risk his life for his friends. Addresses Hisame as "Hisa" and Sidi as "Sidi." Hair color: Black (with streaks).

Hisame The sole female member of KareKoreya, a hybrid "Yuki-onna" who inherited the powers of the snow woman. Despite her refined appearance, she is the sharp-tongued and merciless straight-man of the group. She loves sweets to an extreme degree and can undergo a personality shift for them. Addresses Kagechiyo as "Kage" and Sidi as "Sidi." Hair color: Light Blue.

Sidi of KareKoreya is a hybrid of a werewolf and Horus, a former assassin raised by goblins. While he appears cool at first glance, he is an extreme airhead. Pure-hearted and incredibly kind, he is a natural gigolo who says embarrassing lines with a straight face. He possesses top-tier physical abilities and overwhelming combat power. Despite being a specialist in hand-to-hand combat, he has a domestic side, handling all housework like cooking and cleaning perfectly.