When a mysterious being takes possession of Yusuke's body, he starts beating Sensui. In the final Spirit Gun, Yusuke recovers control of his body and does not remember what happened. When Yusuke tells Sensui to start their fight again, Itsuki appears and explains Sensui is victim of an illness. Yusuke suggests Koenma to use his powers to heal Sensui but Koenma used them up to revive Amanuma. Sensui explains that when he was young, he asked himself why only he could see the demons and then after being the dark side of human race, he asked himself if killing those demons was the right thing to do. He then decided he wanted to be killed by a demon and die the Makai. He then thanks Yusuke for the fight and dies. Itsuki takes Sensui's dead body and they go to other dimension to stay together forever. Yusuke then remember the being who took control of his body and decides to take revenge for having interfiered in his fight. But Koenme tells him tgat the tunnel is about to shut and then Yusuke decides to return to the Human World.