Thanks to this
, I thought it'd be a good idea to tell you guys about the Dengeki anime cameos in the game:
Shana - Shakugan no Shana
Taiga Aisaka - Toradora!
Horo - Spice and Wolf
Dokuro-chan - Bludgeoning Angel Dokuro-chan
Index - Taoru Majutsu no Index
Boogiepop - Boogiepop Phantom
Yoko - Inukami!
...there are also 3 other people you can play as; some weird alien suit, Celty Sturlson from Durarara!!
, and, of course, Asagi from Disgaea
. Here's a video showing all the cameos.
Apparantly each character has a dungeon and you must defeat them in order to get their individual costume.; in order for you to get Asagi, all the other Dengeki cameos must be defeated.