The Flowers of Evil was serialized between 2009 and 2014 in a manga magazine that was started in what month?
The Flowers of Evil (manga): The Flowers of Evil (Japanese: 惡の華 , Hepburn: Aku no Hana ) is a Japanese manga series written and illustrated by Shūzō Oshimi. The Flowers of Evil (manga):  It was serialized in Kodansha's "Bessatsu Shōnen Magazine" between September 9, 2009, and May 9, 2014, and licensed by Vertical in North America. Bessatsu Shōnen Magazine: Bessatsu Shōnen Magazine (Japanese: 別冊少年マガジン , Hepburn: Bessatsu Shōnen Magajin ) is a Japanese monthly manga magazine published by Kōdansha. Bessatsu Shōnen Magazine:  The magazine was started in September 2009 as a spin-off of another Kōdansha's magazine, "Weekly Shōnen Magazine".
September