All-Round Evolution in the Apocalypse

"In the post-nuclear-war apocalypse, radiation gave rise to countless monsters that threatened humanity’s survival! The nation was completely destroyed, so who could preserve world peace? Four powerful conglomerates formed the Planetary Alliance, taking control of Earth and ruling the world! A mysterious young man appeared out of nowhere, his abilities evolving in every way. He led mercenaries, ability users, and rebel factions! He hunted monsters, fought gunmen, battled ability users, dominated the Alliance, and overturned the stars. Yet in the end, he understood: Life is simply the process of coming to know yourself!"