I'm Ridiculously Overpowered—So What If I Make Humanity Immortal?

Five centuries ago, weakness meant extinction. Now, humanity rises from the ashes of a shattered world to conquer the stars. No retreats. No surrender. Only total war. Watch as a lone powerhouse ignites mankind's cosmic rebellion—turning backwater survivors into an unstoppable empire that will burn galaxies, topple star systems, and carve humanity's name into eternity itself.