Studio Geneon Entertainment Series2Years active2007 - 2008 Top works Rating: 7.5 A Certain Magical Index 2008 · Animation · Comedy Rating: 7.3 Shigurui: Death Frenzy 2007 · Animation · Drama Works 2000s Rating: 7.5 A Certain Magical Index 2008 · Animation · Comedy Anime Series UHD Rating: 7.3 Shigurui: Death Frenzy 2007 · Animation · Drama Anime Series UHD