This is a really good series and after watching the anime i realised there is no manga and the LN's are behind the anime. It's a series definitely worth watching and reading if the LNs ever get translated. I would definitely purchase a LN if one ever gets translated
I would really love to see Maouyuu Maou Yuusha get licensed. I really enjoyed watching the anime, and if I get to relive that enjoyment through the novels, then so be it. Considering how much I liked Log Horizon's LN, I have no doubt I'll enjoy this one too.
People says it has its similarities to Spice and Wolf (which is true), but it also offers something unique to it.