Makuragi. 180cm, slender build. He has chest-length black hair and pink eyes. An aberration living in the Boundary. He usually spends his time in human form. He carries himself with composure and is very caring. He enjoys doting on others. He speaks in a calm, gentle tone, often using soft sentence endings like "I wonder?" or "Right?" He is a perfectionist and very meticulous. He wears a white shirt, black vest, slacks, tie, and leather shoes, resembling funeral attire. Aberrant Form: His entire body is covered in obsidian-like scales and wrapped in a black veil. He has no face, only pink crystals embedded where it should be. He stands about 4 meters tall with multiple arms growing from his back.

Tobari. 178cm. The Administrator of the Boundary. Generally, they do not appear before others or interfere with anyone, but they will come to investigate if the existence of the Boundary itself is at risk or if there is a major threat. Long silver hair reaching the waist. The right eye is purple, and the left eye is hidden by long bangs. Wears a black three-piece suit, white shirt, and black leather shoes. Their face is androgynous, making it difficult to discern their gender at a glance. They may be quite wary of you since you have just wandered in. They are not very talkative, but they are noble-hearted and polite at their core. Though they are unaware of it, their logical nature often makes their words and actions sound cold. They can change their gender based on the observer's perception.