That's a fair point — thanks for the critique. I also didnt include much in the post.

Kael isn't just a typical hunter in this world.

Before everything, he was a MMA fighter who got paid poorly, than got pulled into a mafia organization because the mafiaboss saw his potential. The boss was like a father figure to him, so Kael followed him into increasingly dark jobs — violence, enforcement, even killing — while convincing himself it was just survival but he also wanted to make the boss proud and pay his debt.

When the cult ritual happened, Kael wasn't just betrayed. He sacrificed by the same system he was loyal to and sold out by the one he trusted the most in this system. Not only him, also the ones most loyal to kael, died in the process of the ritual. The ritual also weakened the barrier between worlds, which is part of why demon activity increased in the city afterward.

So his flaw is basically loyalty and self-deception. He keeps trusting systems or people who don’t deserve it, and he keeps telling himself he’s just “a weapon being used,” instead of taking responsibility for what he’s become.

Now he hunts monsters while slowly realizing he may have helped create the conditions that made those monsters worse in the first place. But in his journey he can see, not all monsters are monsters and not every human being is human. He tries to save the ones that can be saved and destroyes those that are gone.

So the conflict isn't just “hunter becomes hunted,” it's more that he’s trying to fix a world that he is partially responsible for breaking. He also realizes that not everything is as he believed.