Fire Magician.

The world we lived since centuries is not the same anymore.

It's not even the same World.

Countless planets merging into one, countless races are fighting each other, allying each other, betraying each other, each one doing it for the same desire.

Survival.

Our protagonist is the same, fighting only for survival, to survive in this harsh, and new world. Discovering the Arcana language, fighting for what he desires, building what he desires, doing what he wants.