Inuyasha the Movie 4: Fire on the Mystic Island

After 50 years, Hourai Island, a legendary island where demons and humans once lived together in perfect harmony, reappears. The island now holds a group of half-demons imprisoned, who must offer their lives to the four gods also sealed on the island. However, one of them escapes and finds InuYasha and his friends, asking them to rescue her brothers. Sesshomaru also decides to confront them, since, like InuYasha, they were marked with the mark of the four gods 50 years ago. Yet InuYasha and his group will face a tough battle, as they will not only confront the Four Gods but also a clone of Kikyou, which was formed from her blood 50 years ago.