Rumiko Takahashi
In 1980, she wrote a lot of books. The most important was Maison Ikkoku from 1980 to 1987. She finished both Urusei Yatsura (34 books) with Maison Ikkoku (15 books). After that she began a dark, story telling type of manga - the Mermaid Saga, finished at 1994, with the story Mermaid's mask. It is thought to be unfinished because it did not have a note to tell the reader it was ended. One-pound Gospel was her next book. It was nearly not finished because of the ending similar to Mermaid Saga, with the last story done in 2001.