Question: The Flowers of Evil was serialized between 2009 and 2014 in a manga magazine that was started in what month?
Context: 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.  The magazine was started in September 2009 as a spin-off of another Kōdansha's magazine, "Weekly Shōnen Magazine". Guardians of the Louvre (Japanese: 千年の翼、百年の夢 , Hepburn: Sennen no Tsubasa, Hyakunen no Yume ) is a Japanese seinen manga written and illustrated by Jiro Taniguchi.  The manga revolves around an artist visiting the Louvre for five days and learning about artists whose works are there and figures who were part of its history.  Commissioned by the Louvre, Taniguchi worked on the manga after spending a month in the museum in May 2013.  The manga was serialized in Shogakukan's manga magazine "Big Comic Original" in late 2014 and collected into a tankōbon published on February 20, 2015.  The Louvre and Futuropolis published the manga in France on November 21, 2014.  The manga was licensed in North America by NBM Publishing, which published the manga on May 13, 2016. Blue Drop (ブルー ドロップ , Burū Doroppu ) is a Japanese science fiction yuri manga created by Akihito Yoshitomi.  It comprises five chapters that were serialized in the shōnen manga magazine "Dengeki Comic Gao! " from June 2004 to December 2005, and later collected into a single volume.  In 2007, Yoshitomi began to work on a new "Blue Drop" manga, titled "Blue Drop: Tenshi no Bokura" (BLUE DROP ～天使の僕ら～ ) , which was serialized in the manga magazine "Champion Red" between February 19, 2007 and January 19, 2008, with its 14 chapters later compiled into 2 volumes.  Each volume contained a chapter of another series called "Tenshi no Itazura" (天使の悪戯 , Angel's Trick ) where Kasagi is a member of an alien race of females called the Arume.  She spends her time playing matchmaker for unsuspecting, cute human girls.  The third and fourth chapters were not released until 2008. Shina Dark: Kuroki Tsuki no Ō to Sōheki no Himegimi (シャイナ・ダルク 〜黒き月の王と蒼碧の月の姫君〜 , Shaina Daruku , lit.  "Shina Dark ~King of Dark Moon and Blue Moon's Princess~") is a Japanese fantasy and comedy manga series written by Bunjūrō Nakayama and drawn by Yukari Higa.  The manga originally started serialized in ASCII Media Works' seinen manga magazine "Dengeki Teioh" on January 26, 2006, and ran in that magazine until November 2006 when it went on hiatus until starting up again in ASCII Media Works' shōnen manga magazine "Dengeki Daioh" in April 2007.  The manga ended serialization in "Dengeki Daioh" in the March 2009 issue.  Four bound volumes were released by ASCII Media Works.  A DVD containing four animated music video clips was bundled with the third manga volume, produced by the animation studio Shaft. K-On!  (けいおん!  , Keion! )  is a Japanese four-panel comic strip seinen manga written and illustrated by Kakifly.  The manga was serialized in Houbunsha's manga magazine "Manga Time Kirara" between the May 2007 and October 2010 issues.  It was also serialized in Houbunsha's magazine "Manga Time Kirara Carat".  The manga relaunched from April 2011 to June 2012 with two separate storylines published in "Manga Time Kirara" and "Manga Time Kirara Carat".  The manga is licensed in North America by Yen Press. GA Geijutsuka Art Design Class (Japanese: GA 芸術科アートデザインクラス , Hepburn: GA Geijutsuka Āto Dezain Kurasu , Also written "GA Art Department Art Design Class") is a Japanese "seinen" yonkoma manga series by Satoko Kiyuzuki.  The series was serialized in Heiwa Shuppan's moe four-panel manga magazine "Comic Gyutto! " from its first issue on July 23, 2004 to its last issue (the third issue).  Afterwards a one-shot manga appeared in the August 2005 issue of Houbunsha's seinen manga magazine, "Manga Time Kirara Carat", and started regular serialization from the November 2005 issue to the December 2015 issue.  Yen Press announced at Comic Con 2008 that it had acquired a license for English-language distribution of "GA Geijutsuka Art Design Class" in North America.  A 12-episode anime adaptation aired in Japan between July and September 2009. Chrome Shelled Regios (鋼殻のレギオス , Kōkaku no Regiosu ) is a Japanese light novel series by Shūsuke Amagi, with illustrations by Miyū.  A short story light novel series was serialized in "Dragon Magazine".  A manga adaptation drawn by Miyū is serialized in the shōnen manga magazine "Dragon Age Pure".  A second manga adaptation drawn by Nodoka Kiyose is serialized in the shōnen manga magazine "Monthly Dragon Age".  A third manga adaptation drawn by Watari is serialized in "Beans Ace" magazine.  A four-panel comic strip adaptation drawn by Masumi Futaba started serialization in "Monthly Dragon Age" on November 8, 2008.  A science fiction light novel series titled "Legend of Regios" is set in the past world of "Chrome Shelled Regios" series, and published by Fujimi Shobo under its Style-F label.  An anime adaptation produced by Zexcs aired on January 11, 2009 to June 20, 2009 and is licensed in North America by Funimation Entertainment. Venus Versus Virus (ヴィーナス ヴァーサス ヴァイアラス , Vīnasu Vāsasu Vaiarasu ) is a Japanese manga series created by Atsushi Suzumi which was first serialized on June 27, 2005 in MediaWorks' shōnen manga magazine "Dengeki Comic Gao! ".  The manga ended serialization in "Dengeki Comic Gao!"  on February 27, 2008 due to the magazine's discontinuation, but the manga continued serialization in ASCII Media Works' manga magazine "Dengeki Daioh" between March 21 and July 26, 2008.  Eight bound volumes have been released by ASCII Media Works in Japan.  The manga has been licensed for English language distribution by North American–based company Seven Seas Entertainment; the first volume was released in July 2007.  Later, a drama CD was created based on the manga series in October 2006.  The series has since been adapted into an anime produced by Studio Hibari that aired in Japan between January and March 2007 on BS-i, containing twelve episodes. The Flowers of Evil (Japanese: 惡の華 , Hepburn: Aku no Hana ) is a Japanese manga series written and illustrated by Shūzō Oshimi.  It was serialized in Kodansha's "Bessatsu Shōnen Magazine" between September 9, 2009, and May 9, 2014, and licensed by Vertical in North America.  The story follows a middle school student named Takao Kasuga who's forced into a "contract" by fellow student Sawa Nakamura, after being caught stealing the gym clothes of his crush Nanako Saeki, and the series of events afterwards that follow these three characters.  The title of the manga comes from Charles Baudelaire's "Les Fleurs du Mal". The manga series "" is written by Ryukishi07 and illustrated by six different manga artists working separately on different story arcs based on the "Umineko: When They Cry" visual novel series by 07th Expansion.  The first manga, an adaptation of "Legend of the Golden Witch" illustrated by Kei Natsumi, began serialization in Square Enix's manga magazine "Gangan Powered" in the January 2008 issue.  After "Gangan Powered" was discontinued, the manga was transferred to Square Enix's "Monthly Gangan Joker" magazine with the debut May 2009 issue and continued until the publication of the September 2009 issue.  Jirō Suzuki drew the adaptation of "Turn of the Golden Witch" which was serialized between the August 2008 and October 2010 issues of Square Enix's "GFantasy".  The manga adaptation of "Banquet of the Golden Witch" is illustrated by Kei Natsumi and was serialized between the October 2009 and July 2011 issues of "Gangan Joker".  Sōichirō drew the adaptation of "Alliance of the Golden Witch", which was serialized in Square Enix's Internet-based magazine "Gangan Online" between October 1, 2009 and February 2, 2012.
Answer: September