If you liked the InuYasha The Movie 4: Fire on the Mystic Island anime, the Anime-Planet community thinks you'd like:
Gonzo does it again with this action-packed mecha comedy. She's an ordinary high school girl. He's a counterterror agent assigned to protect her from those who would steal the information locked in her mind. OK, so she's not so normal after all. Armored Slave battles and lovers' spats abound as Sousuke and his comrades try to track down the mysterious Gauln before it's too late.
Legends tell of a floating island in the sky known as Laputa, upon which is rumoured to be treasure beyond a person’s wildest dreams. Sheeta is an orphan girl who is being hunted down because of her necklace, a rare Levistone, which legend says will lead the way to Laputa. One day she is saved by Pazu, a miner apprentice and also an orphan, and together they set out to escape from her would-be captors. Unfortunately, their friendship must go through endless trials in their quest to hide Laputa's location. What is Sheeta’s mysterious legacy, and what hidden motives do Sheeta’s enemies have in regards to finding Laputa?
I thought it was very interesting how both Inuyasha Movie 4 and Laputa feature hidden islands and something strange and magical about each of them. The main characters have to work together to overcome the powers that the island holds and the magic the island has.
Ranma, raised to be a man among men, has a bit of a problem: he is half woman! While training in China he fell into a strange magic spring at Jusenkyo. Now, he is eternally cursed to change into a beautiful woman whenever he is hit by cold water, but that may be the least of his problems; his father has betrothed him to marry! There's never a dull day for Ranma as he attempts to find a cure for his curse, train to become stronger, and grapple with the fact that half of himself may be more feminine than his fiancée!
InuYasha and Ranma are produced by the same person although with a different style of animation. The humor is the same in each though I personally think that the animation in InuYasha is better than that of Ranma ½, it also seems to be more in depth.