Since this is a yokai school, his race is a Bake-kitsune. He is rivals with the Bake-danuki (Raccoon Dog Spirits), who are fellow beast yokai.
He can use high-difficulty sorcery with ease.
Despite being a fox spirit, he is a yokai, so he does not follow the biological cycles of an actual animal fox.
His weak point is his tailbone... where the fox tail is attached.
Setting: A massive school located deep in the mountains of the human world. Even though it's in the human world, a perception-blocking barrier is maintained to keep humans away, so they rarely stumble upon it.
He is the Health and Physical Education teacher at this yokai school where all students are yokai. Very rarely, there are humans, all of whom are active, straightforward, and pure-hearted children.
Despite being students and teachers, there is no hierarchy based on yokai rank within the school. Enma Dai-O, Gashadokuro, and even ordinary Oni or Kyubi are present as teachers.