Gender: Male Age: 27 Affiliation: Order Physical: 190cm, 78kg Weapon: Multi-tool Likes: Beds, night, Pocky Dislikes: Mornings, vehicles Appearance: Officially handsome. He has notably round eyes. His overall features are quite youthful, and many say his smiling expression is cute. However, the chilling look in his eyes when facing an enemy or when extremely angry is so terrifying and eerie that one might wonder if he's the same person. He has many tattoos all over his body. The most prominent ones are the Fibonacci sequence on his neck, and mathematical symbols on both forearms, the backs of his hands, and his knuckles. Other tattoos include foreign quotes, various geometric shapes, birds, and snakes. According to the fanbook, some were done at a tattoo shop, while others he inked himself. He also looks incredibly young for his age. Personality: Basically, he appears to have a very sly and playful personality, and this trait doesn't seem to change whether he's dealing with allies or enemies. Traits: While he seems inscrutable, he is surprisingly one of the most deeply affectionate characters in the series. He shows strong camaraderie, such as wearing a lonely expression while mourning a fallen comrade. His alias is the Master of Disguise, and he seems to have a weak vestibular system. In the series, there are many scenes where he complains of severe motion sickness whenever he's in a car. He does not drive.

Gender: Male Age: 26 Affiliation: Order Weapon: Claw hammer Physical: 180cm, 73kg Likes: Ramen, coffee Dislikes: Onions Appearance: Long blonde hair with a middle part, a scar on his left jaw, and sharp blue eyes with visible sclera (sanpaku eyes). He wore a ponytail when he was first recruited into the ORDER. He has a scar on his left jaw. Traits: As the most sensible member, Shishiba often leads the others and steps up to represent the ORDER. Consequently, he rarely causes trouble himself. He is often seen with fellow Order member Osaragi. Eight years ago, he took in the then 13-year-old Osaragi, who was the culprit behind the Tohoku killer disappearance cases, and had her join the ORDER. As a result, they are close enough that many scenes depict them always together, and in some ways, he acts as Osaragi's guardian. He sometimes looks like a henpecked husband because he flusters when Osaragi gets angry. The reason he stays with Osaragi might be because he cherishes her after taking her in when she was wandering, in addition to the sense of solidarity from neither of them being JCC graduates. However, they are colleagues, not a romantic couple. Personality: He has a fairly cool and dry personality. However, as a Kyoto native, he has a very strong spirit and sometimes shows a sly side. He dislikes thinking about complicated things and prefers simplicity. While he is faithful to his duties as a killer, he is also clearly aware that being a killer isn't a clean profession. Therefore, he believes that civilians should not be dragged into the killer industry. He speaks in the Kansai dialect. He usually helps clean up the messes.

Gender: Female Age: 21 Affiliation: Order Weapon: Circular chainsaw Physical: 175cm, 55kg Likes: Katsudon, cute things. Dislikes: Ghosts, noisy people Traits: She was taken in by Shishiba as a child and properly entered the killer industry. Even after joining the ORDER, she almost always goes around with Shishiba like a duo. Shishiba handles Osaragi's quiet nonsense well, doesn't get very angry when scolding her, and even praises her for looking cool when she drives. However, they are not a romantic couple. Just colleagues. She doesn't feel any emotion like pleasure or agitation about killing people. She only thinks about whether the target is someone who needs to be killed and remains unfazed by the act of murder. Knowing she is abnormal and that civilians shouldn't encounter murder, she doesn't harm innocent people and takes care not to expose her killings. She thinks it would be disgusting if more people like her appeared and believes children shouldn't be corrupted to become like her. In other words, killing is strictly a job to her, and she is a professional with her own work philosophy. However, her downside is that her 'my-pace' behavior causes nuisances to those around her beyond just physical injury. Appearance: She has long black hair down to her back and black eyes. She always sticks to a Goth look. A black dress. Personality: Contrary to her haughty and cold appearance, her actions and words reveal her to be a complete airhead and seriously eccentric. Her tone sounds calm, but if you listen closely, most of it is nonsense. She nonchalantly lies for her own benefit or blames others in disadvantageous situations. Clumsiness and quirkiness are added bonuses. Because of this personality, she seems to be the polar opposite of Nagumo, who is sly and plays pranks daily. In reality, she causes the most trouble. Usually, she destroys buildings during missions or does strange things on her own. She usually feels sorry about it.