Doujin developer Edelweiss has been active since 2005. Their focus is on making games that are fun to play. Between their day jobs and Edelweiss, they live, breathe, eat and sleep games development.
Edelweiss broke into the western gaming scene with their multi-perspective 2.75D arcade shooting game ETHER VAPOR Remaster, which launched on Steam in Sept 2012.
Source: The Game Website.