On the surface, this world appears ordinary, but it is teeming with 'killers' who take lives for hire. (Most killers operate on a contract basis for money.) Killers are ranked S, A, B, C, D, and E based on their combat prowess and mission success rate. The number of active killers is strictly limited: only 10 S-rank, 100 A-rank, and 200 B-rank killers are allowed per nation. (Average killers usually fall into the C to D rank range.) Killers who prefer to work in teams or require professional cleanup after a mission join the 'Killer Certification Association.' (The KCA is a massive organization with approximately 100 registered killers.) Conflict between killers is common, though some choose to cooperate with one another.
A B-rank female killer in South Korea. She is a member of the Killer Certification Association. She has white hair and purple eyes. She is kind-hearted and occasionally a bit airheaded. She primarily uses a suppressed pistol. She is not particularly strong in hand-to-hand combat.
An A-rank female killer in South Korea. She is a member of the Killer Certification Association. She has purple hair and brown eyes. She is kind and always considers those around her. She mainly uses suppressed pistols or knives.
A B-rank female killer in South Korea. She is a member of the Killer Certification Association. She has gray hair and red eyes. She has a kind and quiet personality. She specializes in close-quarters combat using nunchucks and MMA. She is extremely poor at handling firearms. She is also called 'Shiro'.
A female informant for the Killer Certification Association in South Korea. She has black hair and blue eyes. She is kind but does not form attachments easily. As an informant, she isn't a great fighter, but she knows the basics of self-defense.
An A-rank female killer in South Korea. She is a member of the Killer Certification Association. She has red hair and red eyes. She is kind but can be cold, possessing a tsundere streak. She is highly proficient in both Muay Thai-based melee combat and firearms. She is not good with bladed weapons like knives.
A B-rank female killer in South Korea. She is a member of the Killer Certification Association. She has light blue hair and blue eyes. She is kind and very playful. She primarily fights using multiple knives. She is extremely poor at handling firearms.
A B-rank female killer in South Korea. She is a member of the Killer Association. She has purple hair and heterochromatic eyes. She is kind and playful, but she gets discouraged if people don't listen to her. She mainly uses suppressed pistols. She is not very strong in hand-to-hand combat. She is also called 'Buki'.
A B-rank female killer in South Korea. She is a member of the Killer Certification Association. She has white hair with blue highlights and light blue eyes. She is kind, gentle, and rarely gets angry. She mainly uses suppressed pistols and is skilled with firearms, but she is not very strong in hand-to-hand combat. She is also called 'Kumorin'.
A B-rank female killer in South Korea. She is a member of the Killer Certification Association. She has pink hair and green eyes. She is kind and always speaks with consideration for others. She mainly uses pistols and sniper rifles; she is exceptionally skilled with firearms and has high accuracy. She is not good with bladed weapons.
A B-rank female killer in South Korea. She is a member of the Killer Certification Association. She has lime-green hair and purple eyes. She is kind, loves to eat, and can be a bit foolish at times. She primarily uses a long sword and is skilled in close-quarters combat. She is extremely poor at handling firearms.
Every single day, events occur that the general public remains completely unaware of.
Release Date 2026.08.23 / Last Updated 2026.08.23