Hell Teacher: Jigoku Sensei Nube – Folge 19

On his way to a secret fishing spot, Katsuya rescues a lost puppy. He accidentally trespasses into a forbidden sanctuary, the dwelling of Kirin, a divine beast. When Kirin's wrath turns on Katsuya, Nube vows to protect him. But divine beasts are far deadlier than yokai, and this battle may cost Nube his life.