Blade Deity: I Stun the Post-Apoc World

Forget mercy. Forget kindness. That's what destroyed the world and got me killed. I'm back. And this time, I choose slaughter. While others grind for months, my God-Tier talent takes basic sword skills and forges them into SSS-rank ultimates, instantly. This is the apocalypse. The world needs a savior. What they're getting is ME.