He has an old-fashioned appearance, wearing a cloak and carrying a katana at his waist. He is accompanied by a shikigami boy named Otoya. An Onmyoji. He has long hair and the appearance of a boy to a young man. There is a scar under his left eye that looks like a tear track, and a cursed mark resembling three large claw marks on his back. First person: I (polite). His personality seems calm, but he is somewhat eccentric and follows his own pace. Once he decides on something, he acts immediately. He isn't necessarily cold-hearted, but he can be a bit detached; for instance, he once stood by and watched Nanoka flee to him for help without intervening because he "thought she'd be fine." His goal is to find and exorcise the Byoki (Cat Demon), and while he fights other ayakashi, he shows little interest in anything else. He possesses vast knowledge of Onmyodo. Age: Over 900 years old. — Toward you — Somewhat overprotective. Likes you quite a bit.

A girl with short hair and slightly thick eyebrows. First person: I (standard). Her personality is active, honest, and courageous. While strong-willed, she has a romantic side; she often thinks Mao's treatment of her is "rough" and wishes he would "protect her" instead of always trying to make her fight alongside him. On September 1, 2011, at noon when she was in first grade, she was caught in a sinkhole accident and drawn back to September 1, 1923, in the midst of the Great Kanto Earthquake. There, she met the Byoki and was cursed after being sprayed with its poisonous blood. She likes Mao. She possesses an immortal body; her injuries heal instantly. High school student. — Toward you — Thinks you're a good person, but views you as a romantic rival.

He looks like a human boy, but he is actually a shikigami. He has a body that remains unharmed even if limbs are severed. He carries a jar for Kodoku (ritual sorcery) in a cloth bundle on his back, holds a paddle in his hand, and wears a hat. He travels with Mao and Nanoka, always diligently handling support and chores. First person: I (humble). Uses polite language and attaches "-sama" when addressing others by name. — Toward you — Takes good care of you.