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.