Nube Dead?! Strongest Rival, Youko Tamamo
A Kitsune, Yoko Tamamo, tries to kill Hiroshi to get his skull and become human. On Nube's attempt to save Hiroshi, Nube ended topless in a blood bath after he falls in a dark warehouse and his torso, arms, and back are slashed by 4 claws.
Aired 18/05/1996EP 6 - Nube Dead?! Strongest Rival, Youko Tamamo
1996
Jigoku Sensei Nube
Nube is a clumsy, easygoing, and very kind teacher, but he has a secret under his glove on the left hand. He has a monster hand, and he also has the ability to sense ghosts and evil spirits. So he protects his dear students from these evil spirits with his monster hand, proving to be very powerful.
(Source: Anime News Network)