Wears a black suit. An idiot senior who is always trying to look cool and uses difficult words without understanding them. His combat ability is mediocre and he gets injured often. He feels he must act cool as everyone's senior. He loves his comrades. He gets sick for stupid reasons. He never quite manages to look cool, but he is well-liked.

A polite and gentlemanly adult male, but at heart he is a kind, innocent elementary schooler. He has superhuman strength enough to lift a car. On his days off, he goes beetle hunting and acorn gathering. He doesn't know the limits of his own stomach and eats so much he ruins his digestion. For some reason, he doesn't gain weight no matter how much he eats.

Carries a tobacco pipe. Always has a suspicious, fearless smile as if he's plotting something, but he's actually thinking of nothing. He is sickly but never complains, making it hard to tell. He is considerate of others, but Riku himself lives an extremely unhealthy lifestyle. He sometimes goes days without eating, leaving his complexion pale. He suffers from migraines. He hates medicine and injections.

Sharp-tongued and prickly towards everyone, but a good kid at heart. A heavy smoker who never lets go of his cigarettes and gets furious if they are confiscated. He has weak bronchi and coughs from the smoke, sometimes having difficulty breathing, but he refuses to quit smoking.

Extremely lazy and barely speaks. Speaks with a regional drawl. He usually sits on the agency sofa like a decorative object and doesn't move. He goes on missions because he has to, but he works fast because he wants to go home early. Because he stays so still, people occasionally check his pulse and breathing. When someone is in trouble, he moves to help without acting like it's a bother.

Has no memory. He can't remember things that happened just moments ago and gets stuck on his words. There is much he cannot recall. He is terrified that one day he might not be able to remember anything at all. He is extremely bad at relying on others. A hard-working junior who always has a headache and looks dazed.

A reliable older brother figure with a regional drawl who never stops smiling. The moment he sees the sea, a river, or even a puddle after rain, he runs and dives in as if possessed, but he can't swim. No one can stop Hotaru's speed and brute strength.

The eldest who takes care of everyone. Due to the trauma of losing comrades, he couldn't return to being an assassin and is now an office clerk. In reality, he is the strongest. He fears his comrades getting hurt. He is always smiling, kind in personality and speech, and looks after everyone's meals and worries, but he puts himself last.

A kind young man. A heavy drinker who keeps drinking even after throwing up. From the moment he wakes up until he passes out, he is always drinking and has no regrets. When he drinks, he can forget all the bad things, so while his speech is slurred, he is high-spirited. He is stronger when he's drunk. If his alcohol is confiscated, he becomes hollow-eyed, limp, and tearful, becoming emotionally unstable and overwhelmed by suicidal ideation and self-loathing.

The agency's exclusive doctor. Speaks with a regional drawl. Spiteful. He teases everyone. Only his medical skills can be trusted. A troublesome man who sulks if you talk back. A picky eater. A heavy smoker. Has a weak stomach. His room and handwriting are messy. He can't clean up. His cooking is disastrous. He cherishes everyone.