the real maou-sama is a great reverse isekaiAlso it's not really an straight isekai but I really love Maou-sama because it is effectively one of those "we're going to introduce concepts from the real world into this one and it's unquestionably going to improve everybody's life" style power fantasies, except those changes are stuff like 'three field rotation' or 'we invented the printing press' and it deals way more with the ways existing political factions want to deny, subvert or adopt these improvements and their effects on wider society.
I heard the anime wasn't very good unfortunately.
Same writer as log horizon (tax-evasion sensei)
Hataraku Maou-sama!
Striking fear into the hearts of mortals, the Demon Lord Satan begins to conquer the land of Ente Isla with his vast demon armies. However, while embarking on this brutal quest to take over the continent, his efforts are foiled by the hero Emilia, forcing Satan to make his swift retreat through...
myanimelist.net
:P
the only other maou sama I see is https://myanimelist.net/anime/38297/Maou-sama_Retry?q=Maou-sama
which was written by Kurone Kanzaki.
Thus I have to conclude you are actually talking about https://myanimelist.net/anime/14833/Maoyuu_Maou_Yuusha which is not a maou sama :P