Kiss of the Goblin Prince: Shadowlands series - Shona Husk
As good as "The Goblin King" is, this sequel is better. Or maybe that was just me falling in love with Dai during "The Goblin King" and wanting his story.

And what a story!

The use of magic here in the Fixed Realm is portrayed believably and yet ... I want to say "magically". It really works.

I like how the story explores connections between people. A strong emotional journey as much as a fantastic adventure.