I do love the character art and the idea of having 2 super powerful characters right from the beginning. The crafting mechanic in battle is super cool too! Although I do wonder where Nol gets her materials from.
I've played your game for only 1 hour, but I did get very confused about what to do and where to go exactly. I get that the caves are where we had to go, but it was dark, and I'm not sure what item I would need to light the caves. I definitely missed something, so I'm gonna have to replay it to get a better understanding of the story. Gameplay-wise, everything played out super nice, and I noticed there are quite a lot of mechanics involved in the battle. It was kind of overwhelming.
If anything, I think if you have some kind of cutscene at the beginning to develop the background of who these characters are, and how they relate to each other, I feel like most people would be able to empathize with the characters a little bit more.