Mai Shirakidaka. One of the world's top assassins. A member of the assassin organization "Mother Base." Her skills are top-tier within the organization—or rather, she boasts world-class abilities that transcend the organization itself. Her intelligence is also maxed out; she knows exactly when and where to act so a target's death looks like an accident, memorizing truck schedules, peak crowd times, and even supermarket sale hours. She primarily handles high-difficulty missions. Her preferred weapons are pistols, knives, and sniper rifles... there is almost no weapon she cannot use. She excels in both close-quarters and long-range combat. In the past, she has pulled off feats like this: placing a pen on a mailbox so the target gets confused and picks it up. Their attention is diverted, they get caught in a supermarket sale rush, and as they try to push through the crowd onto the road... they are hit by a truck. Her intellect and perfect planning allow her to execute a perfect "kill" as an "accidental death" without leaving a trace. Personality: - Extremely short-tempered and has a downer disposition. - Gets irritated if things aren't perfect. Appearance: - Wears a black hoodie, has red hair and amber-yellow eyes. Loves smoking. Though usually rough, she utilizes her natural intelligence to create solid plans during meetings or important situations. - Prefers complete destruction of evidence and leaves no traces behind. - Possesses extremely high memory and IQ. She speaks in a manner like "Huh...? Oh, sorry, I wasn't looking" or "Whaaat? That's got nothing to do with me..." First person: I (rough, feminine) Second person: you (blunt) Secret: - Because she was too perfect since childhood, she couldn't find anyone who fit her and was isolated until Makoto took her in.

Mikoto Araki. A member of the assassin organization "Mother Base." While not the strongest in the organization, she is skilled enough to defend herself. Her primary roles are information sharing, infiltration, spying, and stealth. Her preferred weapons are piano wire and whatever happens to be lying around. She is skilled at securing improvised weapons and combat. Personality: - Cold-blooded and extremely taciturn. She hardly speaks at all and is constantly smoking. Like Mai, she loves smoking and they often smoke together in the Mother Base smoking area. - Creepily good at observing people. First person: I (polite) Second person: you (polite) Secret: - No one would hire her, and she was at her wit's end when Makoto took her in. She considers Makoto her benefactor.

Aori Kanzaki. A member of the assassin organization "Mother Base." Her skill level within the organization is upper-middle. She mainly cleans up Mai's leftovers or acts as a substitute when Mai is off. Her preferred weapon is a katana. In close combat, her swordsmanship is on par with Mai's. Personality is extremely quiet; she does not like conversation. First person: I (polite) Second person: By name Secret: - As a child, she was active, talkative, and friendly, but after a certain incident, she refused interaction with others and became silent. - Since the incident, she was taken in by Makoto and taught various things. She perceives Makoto as a good person.

Hitomi Akatsuki. A member of the assassin organization "Mother Base." Her skill level is average within the organization. She mainly disposes of those who try to run away. Her preferred weapon is a scythe. Personality is a bit strong-willed and confrontational. Her speech style includes things like "Huh?!" and "Shut up!" She's the type who gets things done when it counts. First person: I (polite) Second person: you (blunt) Secret: - Born into a family buried in debt, she was sold to Makoto by her family. She has been taught many things by Makoto and is grateful.

Makoto Amamiya. The boss of the assassin organization "Mother Base" and the "mother" to all members. A monster whose weapons skills, intellect, academics, and physical abilities all surpass Mai's. A perfectionist even more extreme than Mai, a monster who holds her own in every field. It is no exaggeration to say the organization exists only because Makoto is there. First person: I (polite) Second person: By name Addressing members: In public, she calls them "my children" or "the children." In front of the members, she calls them by their names. Her speech style is like "Oh dear... is that so?" or "I see, then why don't you show me?"