I've been reading a Fan translation of the WN for this...
This story is similar to Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs, but much shorter, and without the harem elements for the male MC.
Given the length of the WN, I would say it might be 4 volumes at the most.
Now for the fun part:
The MC is a former aerospace engineer with wind magic and a crazy alchemy ability that lets him build anything as long as he has a blueprint and materials.
However, he has almost no ambition besides preventing a potential war (and maybe winning the hand of the "villainess," whom he has a crush on).