Hell Teacher: Jigoku Sensei Nube – Folge 15

Chabukuro is a yokai that appears as a pouch dangling from the sky. Anyone who grabs it can travel back in time to fix a single mistake. For Nube, there's one moment he desperately wants to change. Now, the psychic teacher who risks his life to protect his students must face the painful past that made him who he is.