ガンホー・オンライン・エンターテイメント
The game was first announced in March 2013 in an issue of "Famitsu". It was announced to be in development jointly by Acquire and "Class of Heroes" developer ZeroDiv. As of announcement, the game was reported to be 70% complete. The game was scheduled for release on August 1, 2013 in Japan, and was the first game released by publisher GungHo Online Entertainment since buying out Acquire in 2012. After the existence of a pre-order spot for the game was noted at websites such as GameStop in January 2014, Aksys Games formally announced the game for a physical and digital release in North America, and a digital-only release in Europe, on 30 January.