Comic Toranoana

Comic Tora no Ana (コミックとらのあな) is a manga store that presumably specializes in dojin material.

The store is held hostage by a group of Orcs calling themselves the Orc Pioneer Federation in the anime series. Demanding that Japan increase the amount of Orc-oriented content in mainstream erotic manga, the Orcs held the store staff at gunpoint until they were defeated by the MONster's New Law squad.

Trivia

 * In the manga series, a doujin store named Libido Doujin is held hostage instead of Comic Tora no Ana.