Togi Jo Totomoni Kieru Yabo Yu yu hakusho : Season 1 Episode 65

The protagonists prepare to sail home since the tournament has ended. In the Spirit World, the Younger Toguro demands to go to the most brutal level of the underworld to repent for his deeds in life. It is explained that the Younger Toguro had been psychologically scarred fifty years ago by a demon named Kairin, who killed all the students of his dojo. Genkai confronts the Younger Toguro for blaming himself for his wrongdoings. Genkai is resurrected in the Living World as the prize for winning the tournament.