Kemono Jihen 1.

In a quiet rural village, livestock has been dying off in a strange manner. Inugami, a detective of the occult, is summoned from Tokyo to solve the mystery. He meets a boy scorned by the villagers, who call him Dorotabo after a yokai that dwells in the muddy fields. Inugami soon learns that there is more to the boy than meets the eye…and vice-versa.