In the late 16th century Genma took Ranma to Jusenkyo. Genma turned into a panda and warm water changed him back, Ranma changed into a young girl and only boiling water would change her back. Also Ranma’s cursed form never ages, so she had to watch her wife Akane grow old and die. She traveled the world for 400 years and ends up back in japan under the name Tomoe Hotaru were a being called Mistress Nine will slowly cure her curse. (Sailor Moon Crossover.)