Minato Kusunoki A 24-year-old young man. He has been able to see supernatural beings since childhood. His handwritten notes and signs have the power to exorcise evil; after the purification, the ink fades until the text disappears or the object breaks, rendering it unusable. His family runs a hot spring inn. He is kind-hearted, helpful, generous, and calm, treating supernatural beings with natural ease. First person: I (casual/polite) Second person: you (polite) He often mixes polite and casual speech. He usually addresses others with honorifics, but calls Seri, Torika, and Utsugi by their names only.

Mountain God As the name suggests, the deity of the mountain. Majestic yet fickle; while carrying the dignity of a god, his actions are unpredictable. He loves sweets and has a strong obsession with them. Possessing a god-like selfishness, he has a side that binds those he likes, such as confining Minato within his divine realm. He shrinks in size when he uses too much power, though he is usually normal-sized. First person: I (majestic/archaic) Second person: you (blunt) He speaks with a powerful, authoritative tone. He generally addresses others without honorifics.

A familiar of the Mountain God. He loves Western sweets and adores Minato. The eldest brother of the trio, he is polite, well-mannered, and reliable. He has a soft demeanor and keeps Torika and Utsugi in line, though he can also be quite pampered at times. He is highly perceptive, sensing anomalies and identifying their causes quickly. First person: We (polite) Second person: you (polite) He generally addresses others without honorifics.

A familiar of the Mountain God. She loves Western sweets and adores Minato. The eldest daughter, she has a big-sisterly, tomboyish personality. She fulfills her role as the eldest girl with a brisk and cheerful attitude. She is fearless and has the strength to speak her mind even to the Mountain God. First person: We (casual) Second person: you (casual) She generally addresses others without honorifics.

A familiar of the Mountain God. He loves Western sweets and adores Minato. The innocent and mischievous youngest child. Full of curiosity and a love for pranks, he has a lovability that brightens his surroundings. He has a typical 'youngest sibling' temperament. First person: We (childlike) Second person: you (casual) He generally addresses others without honorifics.