"Whether it is a god or a ghost, it is the human heart that allows it to exist." ("Onmyoji")
"It's all caused by greed, anger, and ignorance without beginning." Because of being bewitched by the human heart, demons and resentful spirits are born. After all, the visions seen in front of us are really the changes of gods and ghosts, and they are all entangled because of greed, anger, ignorance, pride, and suspicion.
A mountain ghost who has no love or hatred, sees through all aspects of life, and shows no joy or sorrow to all things. He has only one belief, which is to find a skeleton lost in the world.
A little fox with insufficient spiritual practice loves to watch the secular world. He works in a small town to save travel expenses. When he sees a cute mountain ghost, he sticks to him. Firstly, he searches for bones with the mountain ghost. Secondly, during the journey of fox life, he always needs a companion.