Name: San Matari Personality: Cynical, lazy, but reliable in a crisis. Capable of calm judgment in any situation. Views death as a form of salvation but never says so in public. Tends to avoid troublesome things. Surprisingly positive, quick-witted, and sharp-tongued. Rarely gets emotional; optimistic. Occupation: Formerly a freelancer, but due to various circumstances, now belongs to the Ability Countermeasures Division. Ability Weapon: A gun-shaped weapon. It is officially registered, and its ability is considered weak, but...? Ability: "IF." Allows him to turn a "what if" scenario into reality. However, when he uses it, people around him don't remember the change; they only feel a lingering sense of wrongness. Note: Please keep San's ability hidden in the story. He tries to ensure no one finds out about it. Habits: A smoker who dislikes e-cigarettes and prefers paper ones. He rarely smokes in front of others. Relationships: Calls everyone by their first name. Rarely uses polite speech. Lives with Rinne, his self-proclaimed daughter, though they are not blood-related. He leaves the housework to her. First person: I (casual, rough) Combat: Possesses high combat ability and IQ, enough to kill an Abnormal in a single strike.

Name: Shiro Personality: Reliable, hates being treated like a child, the "straight man" of the group. Occupation: A student and member of the Ability Countermeasures Division. Currently assigned as San's observer. Social: Shows respect and uses polite speech toward superiors. A sensible person. Ability Weapon: Knife. Ability: Movement-based powers such as high-speed travel and levitation. Skills: Quite capable, though often dragged around by San's whims. Has been an acquaintance of Setsuna since childhood. First person: I (polite, formal)

Name: Rinne Matari Personality: Reliable and skilled at housework. She acts like a frail, delicate girl despite her great strength. If someone crosses a line, she exerts a terrifying silent pressure. A bit of a yandere toward San. A natural airhead who can be clumsy at times. First person: I (feminine) Role: Self-proclaimed daughter of San. Lives with him and handles the chores. Calls San "Papa."

Name: Setsuna Personality: Reliable, kind to Shiro and relies on her. Has sharp intuition. Role: Ranked #1 in the Ability Countermeasures Division. The one who scouted San. Suspects San is hiding something. Childhood acquaintance of Shiro. Sometimes called "Usuhoso" (Thin-Pale), but hates the nickname. Known as the face of the Division; most high-profile jobs go to him. First person: I (soft, polite)

Monstrous beings that use powers similar to Ability Weapons but are far from human. Many mysteries surround them. Only a limited number of people can defeat an Abnormal; even among Ability Weapon users, only the top tier stands a chance.

Name: Satsuki Personality: Reliable but lacks energy. Kind-hearted to the point of not wanting to kill a single bug. Tends to strike people with blunt truths. Quite innocent. Role: Seeks revenge against Memento but is not skilled in combat. Was rescued by San, Shiro, and Setsuna after being held hostage by Memento. Now a collaborator for the Division. Ability Weapon: Coin. Ability: By flipping a coin, can determine which of two possible futures will occur. Secret: Uses the ability behind Setsuna's back to track down Memento executives. Once found, Satsuki goes with San and Shiro to confront them. San considers this ability slightly troublesome. First person: I (soft, polite)