InuYasha the Movie: Fire on the Mystic Island is the fourth and final InuYasha film, released in 2004.The action takes place on Horai Island, a mysterious island that only appears once every fifty years where humans and youkai live together in harmony. Unfortunately, said harmony is ruined by the tyranny of the Four War Gods, who take over and torment the populace. One resident, a half-demon child named Ai, manages to escape the island and track down none other than Inuyasha and his companions for help.Beware of unmarked spoilers
Fire on the Mystic Island contains examples of the following tropes:
- Adaptation Expansion: Episodes 146 and 147 of the anime stated that Inuyasha and Kikyo visited a mysterious island that only appears once every 50 years. This film reveals that they actually visited Horai Island.
- Ambiguously Human: Kikyo's clone has fangs.
- Blood Magic: Ryura, one of the War Gods, created a clone of Kikyo by taking a sample of her blood.
- Cloning Blues: The War Gods create a clone of Kikyo to use as a slave.
- Contrived Coincidence: Inuyasha, Sesshomaru, and Kikyo were all attacked and marked by the War Gods in the past, and all three arrive on Horai Island after it resurfaces.
- Deadly Hug: When Inuyasha can't bring himself to kill the Kikyo clone, she embraces him and seems poised to bite into his neck before the real Kikyo shows up and takes her down.
- The Four Gods: The villains are based off of The Four Gods.
- Grand Finale: Could be considered this to the original InuYasha anime in a way, as the film was released a few months after the anime's final episode.
- Half-Breed Discrimination: Averted; on Horai Island, humans and youkai live in peace and even produce hanyo children who are treated just like everyone else.
- "I Know You're in There Somewhere" Fight: Inuyasha tries this on Kikyo's clone at first, but gives up up when he discovers it's not the real deal.
- Lightning Bruiser: Unlike the real Kikyo, the Kikyo clone is a Master Swordswoman who is able to physically fight Inuyasha one-on-one.
- Shapeshifter Guilt Trip: Inuyasha manages to overpower the Kikyo clone, but he can't bring himself to kill her; the real Kikyo proceeds to show up and kill the clone herself before berating Inuyasha for letting himself be tricked by the fake.
- You Can't Go Home Again: The film ends with the destruction of Horai Island and the six half-demon children who escaped leaving to find their place in the world.