With the Empress's Backing, I Am Invincible with My Sword

[Classic Fantasy] [Sword Cultivator] [No System] [Decisive and Ruthless] [Overpowered Background]

A young man falls into an abyss and unexpectedly arrives beneath the World Tree. There, he cultivates with the Empress, who stands at the end of the Sacred Path and commands countless universes. He gains an extraordinary opportunity, and from then on, none can stand against his sword!

"Wife, just how powerful are you?"

"Those who have yet to become gods see me as a frog in a well gazing at the moon. Those who have become gods see me as an ant looking up at the sky."

"Then doesn't that mean I'm invincible?!"