Shion no ŌShion no Ō.

Shion no Ō (Japanese: しおんの王; lit. 'Shion's King'), subtitled The Flowers of Hard Blood, is a Japanese manga series written by Masaru Katori and illustrated by Jiro Ando. It was serialized in Kodansha's seinen manga magazine Monthly Afternoon from March 2004 to April 2008, with its chapters collected in eight tankōbon 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.