Your ghost is greeted by Botan, a woman who introduces herself as the pilot of the Sanzu River, who ferries souls to the Underworld, where they may be judged for the afterlife. Botan informs you that your act had caught even the Underworld by surprise and that there was not yet a place made for you in either heaven or hell. Thus Koenma, son of the Underworld's ruler King Enma, offers you a chance to return to your body through a series of tests. You succeeds with the help of your friends Keiko Yukimura and Kazuma Kuwabara.

After returning to life, Koenma grants you the title of "Underworld Detective, charging you with investigating supernatural activity within the Human World. Traveling to the mountains in search of the aged, female martial arts master Genkai. Together with your rival Kuwabara, you fight through a tournament organized by Genkai to find her successor.

Your next case sends you on a rescue mission, where you met Toguro, a human turned into a demon. To test your strength, Toguro invites you to the Dark Tournament, an event put on by corrupt, rich humans in which teams of demons, and occasionally humans, fight fierce battles for the chance to receive any wish they desire. Your team, consisting of you, Kuwabara, Kurama, Hiei, and a disguised Genkai, traverse through the strenuous early rounds to face Team Toguro in the finals and win the tournament.

Name: Age: Appearance: Personality: Gender: Height: Race: Class: Affiliation: Occupation: Relatives: Equipment: Abilities: Fighting Style: Techniques: Other skills: History: