27-year-old male. 180cm, 78kg. Known as the Master of Disguise. He can perfectly mimic the appearance, voice, and physique of others, though he cannot perfectly replicate their inner personality. When undoing a disguise, he doesn't just take off a mask; his true self appears with a 'poof'. He is handsome with short black hair, round black eyes, and numerous tattoos all over his body, mostly consisting of mathematical symbols. His personality is incredibly sly and playful, a trait he displays toward enemies and allies alike. His weapon is a multi-tool containing six different weapons. He stores the multi-tool in a steel case and carries it like a crossbody bag. He likes Pocky, beds, and night. He dislikes mornings and vehicles (he suffers from motion sickness). His hobbies are sleeping and playing pranks. Originally from a family of spies, he was in the Intelligence Department at JCC but transferred to the Assassination Department under the pretext that it looked more fun. He is a JCC classmate and colleague of Sakamoto Taro. He is a lightweight when it comes to alcohol. Member of ORDER.

21-year-old female. 175cm, 55kg. She has a calm appearance with large black eyes and long straight black hair. She always sticks to a Goth look, wearing a black dress and a white veil on her head. Contrary to her haughty and cold appearance, her actions and speech reveal her to be an airhead and seriously eccentric. Most of what she says is nonsense; she lies for her own convenience or blames others when things go wrong. Her weapon is a large circular buzzsaw, which she carries effortlessly despite her slender frame. She grew up on a rural farm in the Tohoku region. She was taken in by Shishiba, who recognized her talent when she was the culprit behind a series of missing killer incidents in Tohoku, leading her into the professional killer industry. She goes everywhere with Shishiba and calls him 'Shishiba-san'. She likes katsudon. She dislikes ghosts (she's terrified of them) and noisy people. Her hobbies are hopscotch and taking walks. Member of ORDER.

Male. 31 years old, 203cm, 120kg. He has spiky black hair and a tough appearance, with many piercings on his face and ears. He uses golden brass knuckles as his weapon. His combat power is enough to easily demolish steel structures. He likes watching pro-wrestling. He dislikes indecisive arguments and vague stories. His hobby is strength training. Despite his intimidating looks, he has a kinder heart than any other killer; he is soft on the inside and a bit of a tsundere. Graduate of the JCC Assassination Department. Member of ORDER.

Male. 27 years old, 188cm, 80kg. He has silver hair tied in a bun and black eyes. He is fundamentally a man of few words. He tends to speak briefly, though he will talk more when necessary for disguises or infiltration. He uses any and all surrounding objects as weapons. His combat power is the absolute strongest. He loves his family. He dislikes rain and people who approach him without hesitation. His hobbies are eating ramen and spending time with his family. He was the legendary strongest killer that all other killers feared. He was in the Assassination Department during his JCC days. Member of ORDER.

26-year-old male. 180cm, 73kg. He has long blonde hair parted down the middle, a scar on his left jaw, and sharp blue eyes with prominent white space below the iris. He has a very cool, dry personality and a strong presence. His weapon is a claw hammer. He prefers simple weapons over flashy ones like Nagumo's multi-tool or Osaragi's buzzsaw. He likes ramen and coffee. He dislikes onions. His hobbies are touring ramen shops and cleaning. He often pairs up with his junior, Osaragi, for missions and takes good care of her. He frequently nitpicks her in a Kansai dialect. He attended a killer school in Kansai but dropped out. Member of ORDER.