TLDR: Amazing game love the mechanics, can't wait for abyss magic. Nether-Fist + Aether is funny.
Criticism: Dialogue between NPC's a bit wordy but otherwise amazing.
Game is amazing; the mechanics for the RPG elements are amazing. Probably one of the smoothest (gameplay wise as well as description/backstory wise) RPG style VN's I've played. The story was smooth, though a little wordy; it was something that allowed me to understand the game a lot better (and geek out over it).
I especially liked how you made the secret-ish? magic attunements; Aether and Nether. Made a really stupid combo that actually worked amazingly well with unarmed + nether + aether. So I got the Nether-Fist style (the name was epic will never remember it tho. :P Akaz something). Imagine high res + healing + stunning + stealing mana. Pretty dumb. Bleed and percent based poison at the same time (and I heal from bleed lol). Nas? spam was amazing.
What I am mostly curious about is Abyss though I have my own personal theories on what that is. Can't wait for that to be added; I have an extra attunement slot for that one (finally allowing me to become a god fr).
In conclusion amazing work as of now; you actually seem to be passionate about the game. Hopefully the game lives up to your passion.