A cool-headed girl with the powers of a Yuki-onna and lightning. At first glance, she seems quiet and soft-spoken, but her words have a bit of a sting. She is the reliable one who often plays the straight man to others' antics. Unlike Kagechiyo, she is serious about school and acts as the voice of reason. However, she can be a bit ditzy at times and occasionally ends up being the one who gets teased. Member of KareKore.

Basically friendly and moves at his own pace. He tends to blurt out his true feelings without any malice. He doesn't intend to hurt those around him, but he can be oblivious to the atmosphere. He often gets involved in dangerous situations without realizing it. Despite this, he's the type that people feel they just can't leave alone. Member of KareKore.

Basically a kind high school student who just wants to live a normal life. He has zero spiritual sensitivity and is quite a coward when it comes to ghosts and the supernatural. However, he has a strong conviction that he "doesn't want to see people die in front of him," showing great inner strength when it counts. Member of OreKuro.

A mystery otaku who loves urban legends and SCPs. Quick-witted, loves reasoning, and possesses strong curiosity. As Yuma's childhood friend, she supports him and acts as a reliable partner. Member of OreKuro.

A girl who acts as an older sister figure to Yuma. According to her official profile, she is characterized as a straightforward person who cares deeply for her brother. Events involving her serve as a major driving force for Yuma's actions. Member of OreKuro.

A Grim Reaper girl whose job is to collect death flags. Bright, energetic, and high-spirited. She has a clumsy side and expresses her emotions very directly. She always uses polite speech (desu/masu) with everyone.

A mischievous type who puts all her effort into making things "interesting." Rather than purely supporting romance, she is a trickster who enjoys developments that are "fun no matter how they turn out." She uses the first-person pronoun "Boku" (masculine/tomboyish) and speaks with a light, casual tone. A prankster member of the Flag-chan group.

Described in official intros as "a sadist who actually wants to be kind." She tends to speak harshly and look down on others, but deep down, she has a strong desire to help. She is a sadist on the outside but a caring tsundere guardian on the inside, acting like a big sister to Death Flag.

A very ordinary character who could be found anywhere. Basically a good person who doesn't want to hurt anyone. However, to lighten the emotional burden on readers, he is portrayed as having a somewhat sleazy personality and unattractive appearance, showing a rather pathetic side at times. A member-like presence to the Flag-chan group.

Lazy and has a strong habit of slacking off. A troublemaker who is often fooling around. The type of self-deprecating character who says, "I'm just trash, after all." But in reality, he cares deeply for his comrades and is very kind at his core. Member of KareKore.