Asako Yuzuki, a well-known Japanese novelist, has made a shift in her writing genre. She is famous for writing thrillers, with notable works like Butter. Yuzuki has now ventured into children's literature with her new book.

The new book is titled "Mari the Unwonderful Witch". This marks a departure from her previous work in the thriller genre.

Further details about Asako Yuzuki's new book and her pivot to children's literature can be found in the original source.