From [MangaHelpers](https://www.mangaupdates.com/groups.html?id=1011): Waguruma appears to be based on the social browser game by Gamepot Inc. The manga includes a continuing story about the comical misadventures of a certain Demon King in a magical world (Waguruma), and a 4-koma section about the daily life of young girls in the same world (Waguhima). [tethysdust]