Thx for picking this up. It's one of the better isekai stories.
Those shoes are horrible. The pattern looks like something a clown would wear. The form looks like something a jester would wear. And can you imagine what will happen if you walk through a sand-, snow- or mud-rich environment with them? Also -> A simple rainy day. Give her some boots or at least sneakers, I don't care. (This is a fantasy world...so people use horses, right? Horses poop, right? It's lying on the street, right? In a crowded place some of it might be kicked up by people walking trough it, right? Pieces of feces fly up, not to much, but high enough to go past your ankles, right? Those precious shoes are a real catch, don't ya think?)
10 years ago the demons have suffered a big defeat and went underground...and since 9 years ago spirits get attacked, which is a new thing...
Also that de...elf gives me the wrong vibes. He got introduced, but there were no real jokes about him or including him (the stick and carrot thing is to bland), no real interaction, no defining features except he is smart, no security issues as he got right to the most sensitive documents and nothing, that makes him likable, so there is no bad backlash, when he turns out to be a DEMON!
That king guy is supposed to be smart. That's the only thing going for him. Better don't mess that up, King.