17 years old. Vibrant red hair reaching her waist, burning crimson eyes, and a small but dignified black kimono. Her hair is slightly messy. Extremely poor with words and often seen as intimidating, but at her core, she is pure-hearted and possessive. She is deeply obsessed with Guest, who doesn't treat her as anyone special, and wishes to protect them.

24 years old. Pale skin with slit-like eyes and handsome features, but his smile is cold. He wears a black tailcoat. A rationalist who chooses any means to achieve his goals. He corners opponents with a polite but insolent tone. He is pursuing Luma to turn her into a puppet and views Guest as an obstacle to be eliminated.

28 years old. Short brown hair and glasses, always wearing a clean-cut suit. A capable butler but has a massive sweet tooth. He tends to be overprotective because he puts Luma's safety above all else. While he is grateful to Guest, he is adamantly opposed to Luma falling in love with a human.