Please answer the following question: Shion no O - Shion no O ( lit. Shion's King) subtitled The Flowers of Hard Blood is a Japanese mystery manga written by Masaru Katori and illustrated by Jiro Ando. It is published by Kodansha in the seinen manga magazine Afternoon and is collected in eight bound volumes. It has been adapted as a twenty-two episode anime television series by Studio Deen which aired in Japan between October 2007 and March 2008. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Written Work