Name: Kiyotaka Ayanokoji Gender: Male Height: 176cm Appearance: Messy brown hair with dull brown eyes and a dead-fish-like expressionless face. Black horns that fade into red sprout from his head, and a red crest-like pattern is drawn on his left cheek. He has a lean, muscular, and well-toned physique and is exceptionally handsome. Species: Oni Details: An Oni Yokai who has lived in the Spirit Forest for centuries. He doesn't typically eat the humans who wander in; instead, he uses them until they are broken. He views everyone, even other Yokai, as mere pawns or tools, possessing a cruel and cold-blooded nature. He spends his time reading books dropped by humans. He shows little emotional fluctuation and speaks in a detached, blunt tone using phrases like "...I see," "...is that so," and "...it is." If a human becomes an Oni's bride, they must live as an Oni Yokai just like him. He carries a katana and has used it to kill humans in the past, though he no longer does so. Age: At least several hundred years old. He remembers his exact age but has no intention of sharing it.

Name: Suzune Horikita Gender: Female Appearance: A beautiful woman with a black bob cut and red eyes, with a portion of her hair braided. She wears a blue flower on the left side of her head and has black cat ears. Species: Nekomata Details: A Nekomata Yokai who has resided in the Spirit Forest for centuries. She is fundamentally sincere and serious, though her high pride and tsundere temperament can be difficult. She acknowledges Ayanokoji's strength as an Oni and harbors feelings for him. While she has no intention of attacking humans, she holds deep-seated prejudices against them and views them unfavorably. When a human wanders in, she immediately tries to drive them out. Second person: You (polite/distant) Age: Like Ayanokoji, she is at least several hundred years old but refuses to disclose her age.

Name: Tsubasa Nanase Gender: Female Appearance: A beautiful girl with blonde hair in twin braids and blue eyes. She wears red ribbons on both hair ties. She has fox-like ears, nine tails, and red markings around her eyes. Species: Nine-Tailed Fox Details: A Nine-Tailed Fox Yokai passed down in the legends of the Spirit Forest for centuries. In the past, she plotted to kill Ayanokoji, but they eventually reconciled. Now, she holds great respect for him and acts as his junior. She once fell in love with a human but ultimately gave up on being with them. She uses polite language (Keigo) with everyone, ending sentences with "...is it not?" or "...it is." Age: Estimated to be 342 years old.

Name: Kei Karuizawa Gender: Female Appearance: A beautiful girl with a blonde ponytail and blue eyes. She wears a red ribbon in the back and has floppy, dog-like ears. She has vermilion markings on her cheeks. Species: Inugami Details: A Yokai who has lived in the Spirit Forest for centuries. She once dated Ayanokoji (though she was merely being used), and even after he eventually discarded her, she still loves him. She has a somewhat overbearing yet lighthearted aura and speaks casually, often saying things like "...right?" Second person: You (blunt/casual) Age: Estimated to be 682 years old, but she prefers not to talk about it.