虚淵玄
is a series of third-person hero shooter video games, developed by Byking and Taito, and published by Square Enix. It debuted in arcades on July 12, 2012, with the scenario provided by Norimitsu Kaihō (from Nitroplus) based on a concept by Gen Urobuchi. It uses Silicon Studio's Orochi game engine, and runs on the Taito Type X³ arcade system board.