At the end of the game, Amaterasu encounters Yami, the main antagonist and final boss of the game who resembles a small fish inside a huge sphere, whose design is altered through the different stages of the battle. Yami is also the ruler of the demons. Before battle, he drains Amaterasu of her powers and leaves her as a plain white wolf. Amaterasu regains her powers throughout the fight, but, after the fourth round, Yami destroys them all again and leaves Amaterasu in a near-dead state. However, when Issun gets everyone to believe in Amaterasu before the fifth and final round, she changes into her most powerful form and battles Yami, vanquishing him forever. In the final battle, Yami also has a huge clawed hand, which demonstrates the evil which comes from humans' hands. The word "Yami" means "darkness" in Japanese.