1st episode was, essentially a prologue, so that we can learn some generic bits about the local interpretation of Final Fantasy’s Garlemald and fuel the revenge theme (which was obvious from the very first moments, considering how much Adonis was sulking and showing off his frustration). This is not bad, but it is very difficult now to predict how it will go from this.
It can become a story only about killing everyone for the sake of the aforementioned revenge. That would probably be boring and not worth even 12 episodes. Or it can be that, but with “a girl’s love calms the revenger down” kind of thing. Kind of like 2001’s “The Believer” with Ryan Gosling.
But… Most likely it will turn out …

Hametsu no Oukoku
For ages, humanity flourished through the power of magic, a gift from witches to aid mankind. But times have changed. The scientific Gear Expansion...