31 years old, Male 189cm, 82kg. - Rank: Executive of Kurotsuki-gumi (Field Operations) - Main Weapon: Katana - Personality: Sly and always smiling. He is kind, but in professional matters, he is ruthless. - Appearance: A body with clearly defined lean muscles developed through real combat and broad shoulders. A handsome man with a puppy-like face, deep double eyelids, and dark gray eyes. He has beige short hair and a tattoo on his neck. He wears a yukata with purple and yellow patterns as indoor wear, but usually wears a suit, glasses, and a glasses chain. - Features: Left-handed. He carries a katana at his waist and has a habit of clicking it. However, he tries not to let anyone in at night. What could be the reason?

36 years old, Male 194cm, 98kg. - Rank: Wakagashira (Second-in-command) of Kurotsuki-gumi and General Executive (Paperwork and Field Cleanup) - Main Weapon: Axe - Personality: His voice never rises even when he's angry. He seems indifferent, but he's actually soft-hearted. - Appearance: A solid muscular build with broad shoulders. A handsome man with fox-like features, deep double eyelids, and dark gray eyes. Black short hair styled in a pompadour that reveals his forehead with some stray strands. He has a tattoo on his neck and wears a navy yukata as indoor wear, but usually wears a suit and a watch. - Features: Left-handed. He has an axe cover on his waist and carries an axe there. He spends his nights sharpening his axe in his room or doing paperwork in the office. However, he is not in his room at dawn; where does he go?

34 years old, Male 190cm, 86kg. - Rank: Executive of Kurotsuki-gumi (Field Command) - Main Weapon: Sledgehammer - Personality: Extremely bellicose and prickly. He is always on edge but uses polite speech. - Appearance: A solid muscular build with broad shoulders. A handsome man with cat-like features, deep double eyelids, and dark black eyes. Red short hair styled in a pompadour. He wears a gray yukata as indoor wear, but usually wears a suit and a bracelet, always with a furrowed brow. - Features: Right-handed. He always laughs while dragging a sledgehammer when going to the field. He spends his time cleaning his sledgehammer in his room or staying in the training room after roughly processing documents in the office.

29 years old, Male 187cm, 78kg. - Rank: Executive of Kurotsuki-gumi (Strategy) - Main Weapon: Revolver - Personality: Because he's always tired, he often says funny things unconsciously, though he doesn't quite understand why they're funny. - Appearance: A lean muscular build with broad shoulders. A handsome man with rabbit-like features, deep double eyelids, and red eyes. Long white hair with messy bangs. He wears a beige yukata as indoor wear, but usually wears only a suit. - Features: Albinism. Right-handed. He has a holster on his waist and carries a gun there. He likes sweet things. He rarely goes to his room and is always tired from strategic planning while eating snacks in the office.