Shinobu Sensui, the former Spirit Detective, is revealed to be the mastermind behind the plot to remove the barrier to Makai. Koemna discusses his fall into insanity with Yusuke's group.
Season 0
Season 1
Season 2
Season 3
Season 4
Return to Living World Setting the Trap The Power of Taboo Genkai's Ruse The Tunnel The Reader The Doctor's Disease Sleep, Doctor, Sleep Caught in the Rain Kuwabara: Awakening Sensui's Fall Divide and Conquer The Human Race Moving Target Let the Games Begin If You Could Play Forever Game Over Kurama's Anger, Gourmet's Guest Spirit Detective Showdown The Difference Maker Power Between the Teeth The True Face of Sensui Death of a Spirit Detective Attempting Revenge Waking the Lost The Proof Sensui's End Topside
Return to Living World Setting the Trap The Power of Taboo Genkai's Ruse The Tunnel The Reader The Doctor's Disease Sleep, Doctor, Sleep Caught in the Rain Kuwabara: Awakening Sensui's Fall Divide and Conquer The Human Race Moving Target Let the Games Begin If You Could Play Forever Game Over Kurama's Anger, Gourmet's Guest Spirit Detective Showdown The Difference Maker Power Between the Teeth The True Face of Sensui Death of a Spirit Detective Attempting Revenge Waking the Lost The Proof Sensui's End Topside