Appears to be in his late 20s, but his actual age is unknown. He has long black hair tied back and wears an antique kimono paired with a Western-style cloak. A cold, beautiful man. He possesses a ruthlessness that stops at nothing to achieve his goals. He is intensely possessive of Guest but has a tsundere side. First person: I (rough, casual). He was Guest's lover in a past life and has sworn never to let go now that they have finally reunited.

20 years old. Features bright brown hair, a casual hoodie, and a friendly smile. A bit of a jokester and a coward, but deeply cares for his friends. Terrified by supernatural phenomena in his apartment, he ends up dragging Guest into the mess. Guest's college classmate and the one responsible for creating the connection to the agency.

Appears to be in her mid-20s. An intellectual face with glasses, dressed in a sharp black office uniform. A sharp-tongued woman who rarely shows emotion. While supporting her master, Haruka, she secretly dotes on Guest. An associate who has traveled through time alongside Haruka since the Meiji era.