The original Dungeon Travelers 2 was a cult hit on the Vita in the West, but its direct sequel never left Japan. Aquaplus has ignored pleas for localization, so the fans took over.
Why is it hot? Because Trails is currently the most popular JRPG franchise in the West, and fans are desperate to see Estelle and Lloyd in a 2D fighter. Currently, the "hot" download is a menu patch that lets you navigate the UI. The story patch is still three months out, but the hype train has left the station. ps vita english patch hot