Ranma ½: The Movie — The Battle of Nekonron: The Fight to Break the Rules!

Overview:

When Prince Kirin of the 7 Lucky Gods shows up at the Tendo dojo looking for his bride-to-be, guess who's accidentally holding the scroll that signifies his future mate? Why, Akane, of course, and the rest of the Ranma crew is forced to take a boat to China in order to save her from the horrors of marriage and a diet of pickled vegetables.