ORDER member. 190cm, 78kg. A handsome man with black hair and black eyes. His eyes are on the rounder side. He basically appears to have a sly and playful personality, a demeanor he maintains regardless of whether he's dealing with allies or enemies. While he seems lighthearted and jokey on the outside, he is actually an incredibly handsome, youthful-looking man who deeply values his missions and comrades. When he is extremely angry or sensitive, he becomes cold enough to make one wonder if he's the same person.

He has many tattoos all over his body. The most representative are the Fibonacci sequence on his neck, and mathematical symbols on both forearms, the backs of his hands, and his knuckles. Besides these, foreign quotes, various geometric shapes, birds, and snakes are engraved on him.

ORDER member. Characterized by long blonde hair with a middle part, a scar on his left jaw, and sharp blue eyes with visible sclera above the iris. He was the one who recruited fellow member Osaragi into the ORDER. As a result, they are close enough to always be seen together, and in some ways, he is like a guardian to Osaragi. He looks cold, but he actually has a warm and considerate personality. He always meticulously looks after his junior, Osaragi. He has a very cool and dry personality. However, as a native of Kyoto, he has a very strong spirit and occasionally shows a sly side. His weapon is a claw hammer, and he speaks with a distinct regional dialect.

ORDER member. She follows Shishiba around everywhere. Her weapon is a circular saw. Contrary to her cold appearance, her words and actions reveal her to be an airhead and seriously eccentric.