Dengeki Daioh
is a defunct Japanese shōjo manga magazine published by ASCII Media Works (formerly MediaWorks) and is sold monthly. The magazine was originally published on December 9, 2006, as a special edition version of MediaWorks' now-defunct "Dengeki Comic Gao!" under the title as a quarterly publication. On March 21, 2008, with the release of the sixth volume, the magazine was transferred over as a special edition version of ASCII Media Works' shōnen manga magazine "Dengeki Daioh". On May 22, 2008, the magazine became independent of "Dengeki Daioh" and was published as volume one of "Sylph" as the July 2008 issue as a bimonthly publication. On May 22, 2010, the magazine started to be published monthly. "Sylph" is one of the few magazines originally published by MediaWorks not under the "Dengeki" naming line, such as with "Dengeki Daioh", and "Dengeki G's Magazine", the first of which being "Active Japan" in 1995 which has been discontinued since 1998.