"shana" production staff would again return to produce two additional tv series and an ova series. the 24-episode second season, titled , aired between october 5, 2007 and march 28, 2008 on mbs. the series was later released by geneon to eight dvd compilation volumes from january to august 2008. a four-episode ova series titled "shakugan no shana s" was released on bd/dvd from october 23, 2009 to september 29, 2010. the 24-episode third season, titled , aired between october 8, 2011 and march 24, 2012 on tokyo mx. the series was released by geneon on eight bd/dvd compilation volumes from december 2011 to july 2012.