Hidan was decapitated by Shikamaru but he was immortal so he was still alive but buried under the ground. Hidan is a very sick lunatic,he will kill anyone for his ritual. He is known for his immortality and sadistic nature. Hidan practices a dark religion and can inflict pain on others by injuring himself, thanks to a cursed technique that links his wounds to his victims. His obsession with his beliefs and violent tendencies make him a dangerous adversary.