@ayachan This is volume 1: https://smile.amazon.com/Dragonoak-Complete-Kastelir-Sam-Farren-ebook/dp/B00WOXQVM2/

It's a self-published book straight to Kindle, so not available other places. It's also pretty clearly not professionally edited, but everything else about it is so good, that's entirely forgivable.

The world building is really great and some fantasy stuff is familiar so that you can focus on the stuff they change. It's a bit of a spoiler, but there's a lot of queer characters (mostly women and NB folks) and I love the way the relationships are written.

It's written in first person and the main character is... extremely relatable.