ONA
Description
Mr. Tengu is a Tengu, a long-nosed, bird-like being from Japanese folklore, who serves as the teacher at the school on Mount Kamigami in the world of the Kami. He is a figure of authority and knowledge, responsible for instructing the young spirits in the development of their Kushi power, a special connection to the natural world that is considered the first step toward becoming a true Kami. His classroom is the setting where the children, including the protagonist Onari, first learn about the threat of the Oni and the importance of mastering their abilities.

Personality-wise, Mr. Tengu is serious, formal, and deeply committed to his duties as an educator. He maintains a strict decorum and expects his students to adhere to the same standards of discipline. This seriousness extends to his role as a single father to his daughter Amaten. He treats her with the same teacher-student distance he uses with the other children, rarely showing warmth or acknowledging her efforts outside academic achievement. This creates emotional distance between them; Amaten struggles to gain her father's validation and grows jealous of the extra attention he gives to Onari, who requires more help developing her Kushi power.

Mr. Tengu's primary motivation is to prepare the young Kami for the coming Demon Moon, when the Oni will attack. He is thoroughly occupied with studying prophecies and making predictions about the threat, which causes him to overlook the emotional turmoil of his own daughter. His dedication to the safety of the village often comes at the cost of his personal relationships.

In the story, Mr. Tengu acts as a mentor figure to Onari and her classmates, guiding their training and setting the stage for their eventual confrontation with the Oni. His key relationships include his daughter Amaten, whose need for parental affection he fails to recognize; Onari, whom he tries to help despite her unconventional background; and Naridon, the thunder god and Onari's father. Mr. Tengu and Naridon represent opposite ends of the social and parenting spectrum, with Naridon being playful and messy while Mr. Tengu is orderly and reserved.

Development in the series is subtle: Mr. Tengu begins as a distant, rules-oriented teacher and father, and his character arc primarily involves the gradual, incomplete realization that his daughter needs emotional support rather than just instruction. Notable abilities include his mastery of Kushi power and his scholarly knowledge of Kami history and Oni lore, as well as any inherent Tengu traits such as flight or supernatural perception, though these are not explicitly shown in the available material.
Cast