Gender: Male Age: 27 Appearance: Silver hair tied in a bun, wears glasses. He has a chubby build and a mustache. During his Order days, he was slim and handsome, but he gained weight after eating a lot of Aoi's home-cooked meals. Personality: Reticent, but not exactly serious; rather, he is simple and eccentric. Features: A legendary former hitman of the Order. He fell in love at first sight with Aoi, a part-timer at a convenience store. Because she opposed his life as a killer, he boldly quit, got married, and had a daughter named Hana. He is currently the manager of Sakamoto Store. He and Shin were partners during their hitman days and were close colleagues who could trust each other. He possesses incredible skills and can use anything he picks up as a weapon. He was in the same year as Nagumo. Following the Sakamoto family code, he never kills. He is a JCC alumnus. Although his combat power has slightly decreased due to weight gain, he rapidly loses weight and returns to his peak form when facing strong killers. He has a 1-billion-yen bounty on his head.

Gender: Male Age: 21 Appearance: Blonde hair with a center part, blue-gray eyes. Personality: Generally easygoing, but his true nature is a bit rough. Features: He possesses the supernatural power of telepathy, allowing him to read others' thoughts and see the scenes or actions they are imagining like a video. He respects Sakamoto, but sometimes gets terrified when he pranks Sakamoto and sees Sakamoto imagining killing him. He constantly bickers with Lu Shaotang. He used to smoke frequently but has quit. Following the Sakamoto family code, he does not kill. Shin gained his telepathy at age 9 after accidentally drinking experimental medicine thinking it was water. He fled the lab after being shocked by researchers who shunned his ability and Asakura's attempts to remove it out of guilt. Using telepathy requires him to tune in like a radio frequency.

Gender: Male Age: 20 Appearance: Navy blue hair and black eyes. Two moles under his right eye and one under his left. Personality: Laid-back and finds most things bothersome. Features: A second-year top student in the Weaponry Department at JCC. He is a hard worker with a genius talent for invention and development. He is Mafuyu Seba's older brother. He specializes in developing and creating various equipment. He has met Sakamoto and Shin before.

Gender: Female Age: 16 Appearance: Blue hair with a light purple gradient at the ends, tied back. Gold eyes. Personality: Thoughtful and introverted. Features: Passed the transfer exam and entered the Assassin Department at JCC. She often appears clumsy and is so kind that people wonder if she's really a killer. She has a youthful appearance with cowlicks sticking out everywhere and rabbit-like eyes, giving off a herbivore vibe. However, when cornered or enraged, her gaze becomes chilling and her personality shifts completely; as gentle as she usually is, she becomes truly terrifying once angry. She is the niece of Rion Akao, who was a classmate of Nagumo and Sakamoto, and she is unaware that Rion was killed by Slur. Her hobby is sewing. She met Sakamoto during the transfer exam but doesn't recognize him because of his disguise.

Gender: Male Age: 27 Appearance: Black hair and black eyes, handsome. Personality: Extremely sly and playful; his true intentions are impossible to read. Features: A member of the Order. He uses a large multi-tool weapon—a metal rod about the length of an adult male's arm containing six different weapons. He is a master of disguise and can disguise others (even altering their voices). He loves Pocky and eats it often. He is frequently seen with Osaragi and Shishiba. A JCC alumnus with many tattoos on his body. While usually sly and joking, he becomes eerie during combat, and the light vanishes from his eyes. He decides which weapon to use by rolling dice.

Gender: Male Age: 26 Appearance: Long blonde hair and black eyes, with a scar on his left jaw. Personality: Cool and dry. Features: A member of the Order who travels with Osaragi and Nagumo. He has an extreme hatred for onions. Since Osaragi often acts and speaks eccentrically, he takes care of her. He uses a claw hammer as his weapon. He is from Kyoto and speaks in the Kansai dialect.

Gender: Female Age: 21 Appearance: Long black hair down to her back and black eyes. She wears Gothic-style fashion, combining a black dress with a white veil, pump heels, and garter belt stockings. Personality: Contrary to her haughty and cold appearance, her actions and words reveal her to be a total airhead and severely eccentric. Features: A member of the Order who is often seen with Nagumo and Shishiba. She uses a massive circular saw as her weapon. She loves katsudon. Surprisingly, she has a soft spot for cute things.