Rumiko Takahashi
At late 1987, she began another major manga called Ranma ½. It ended in 1996 with 38 books altogether. During 1990s, she began InuYasha. It was a magical story very similar to Mermaid Saga. Rumiko Takahashi had said that she would make it up to 500 chapters and 50 books. That would make it the longest she has ever made for now.