The Guin Saga(グイン・サーガGuin Sāga) is the title of a best-selling heroic fantasy novel series by the Japanese author Kaoru Kurimoto, in continuous publication since 1979. A record 100 volumes were originally planned, but as of the author's death in May 2009 the total stands at 126 volumes, with 21 side-story novels. She was working on the 130th volume of Guin Saga up until 23 May 2009, after which point she became too ill to write. After the 100th book in the series was published in 2005, an event to celebrate this was held in Tokyo, with 600 attending. Guin Saga is the longest continuing single-writer's work in the world with total circulation exceeding 28 million worldwide.