Couple of last weeks was hard for me so I didn't pick up any novels other than a pre-pub chapters of bookworm.

The villainess is an ss+ rank adventurer vol 1 this isn't japanese but definietely a Light Novel. Most similar thing I would say is Tearmoon Empire where MC is a princess that is oblivious about how the world works but with sheer dumb luck she overcomes all obstacles. The prose is a delight to read and at least a dozen words I had to look up the meaning of. Characters and worldbuilding are avarge in my opinion but the comedy shines through the pages. 7/10

P.S. not an isekai