Inuyasha the Movie 4: Fire on the Mystic Island

Hourai is a strange island that appears only once every fifty years. Some claim it holds the secret of immortality, while others believe it brings ruin to those who seek it. When Inuyasha and his friends rescue a half-demon child named Ai from a monstrous pursuer, they learn she escaped from Hourai. To their surprise, Ai knows Inuyasha and pleads with him to save her friends, who are trapped by the Four War Gods-a group of ruthless demons Inuyasha has faced before. Upon arriving at Hourai, the group is shocked to find only a few orphaned children left on the island, all marked with a curse that binds them as sacrifices to strengthen the Four War Gods. With no way to break the curse, the only hope is to defeat the demons. But the Four War Gods are stronger than ever, and overcoming them will demand every ounce of the group’s skill and teamwork.