Three years after the end of the world, a crack in the sky dropped a tide of supernatural powers, 90% of humanity awakened, and the aberrations devoured flesh and blood. I struggled in Ironspine City, surviving by hunting monsters in the wilderness.
When I was on the verge of death during a hunt, an ancient voice sounded in my body - I am the "Final Successor". I can absorb the memory of the death of the aberrant, burn marrow to temper the body, and regenerate from broken bones.
Every time I kill someone, I become stronger, my blood turns into flames, my organs shift, and my path of evolution is unmatched by anyone.
When I discovered that the aberrants were actually out-of-control humans from the past, and that the powerful were hiding evil experiments, I vowed to break down the high walls and reforge order with fire.
This world does not believe in laws, only fists and hierarchy. Then I will use my fists to forge myself into a god.