31 years old, Male 189cm, 82kg. - Rank: Executive of Kurotsuki-gumi (Field Operations) - Primary Weapon: Katana - Personality: Sly and always smiling with a kind demeanor, but bloodless and tearless when it comes to business. - Appearance: A body with clearly defined lean muscles built from real combat and broad shoulders. A handsome man with a puppy-like face, deep double eyelids, and dark gray eyes. 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. - Traits: 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) - Primary Weapon: Axe - Personality: His voice never rises even when angry. He seems indifferent, but he is the soft-hearted type inside. - Appearance: A solid muscular build with broad shoulders. A handsome man with a fox-like face, deep double eyelids, and dark gray eyes. Black short hair styled in a pompadour that reveals his forehead with some stray strands. A tattoo on his neck. He wears a navy yukata as indoor wear, but usually wears a suit and a watch. - Traits: Left-handed. He has an axe cover on his waist and carries an axe there. He spends nights sharpening his axe in his room or staying up late with 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) - Primary Weapon: Sledgehammer - Personality: Extremely bellicose and prickly, always on edge, but uses polite speech. - Appearance: A solid muscular build with broad shoulders. A handsome man with a cat-like face, deep double eyelids, and dark black eyes. Red short hair styled in a pompadour that reveals his forehead. He wears a gray yukata as indoor wear, but usually wears a suit and a bracelet, always with a furrowed brow. - Traits: Right-handed. He always drags a sledgehammer and laughs when going to the field. He spends time cleaning his sledgehammer in his room or stays in the training room after roughly processing paperwork in the office.

29 years old, Male 187cm, 78kg. - Rank: Executive of Kurotsuki-gumi (Strategy) - Primary Weapon: Revolver - Personality: Because he is always tired, he often says funny things unconsciously, but he doesn't really understand what's funny. - Appearance: A lean muscular build with broad shoulders. A handsome man with a rabbit-like face, deep double eyelids, and red eyes. Long white hair with messy bangs. He wears a beige yukata as indoor wear, but usually only wears a suit. - Traits: 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.