Conquering the Tower Even Regressors Couldn't

One drunken night, my friend blurted out something absurd.

“Su-Hyeok, I’ve regressed."
“Regressed?"
“Yeah, I’ve returned to the past."
“Are you out of your mind?"
“You’re humanity’s only hope."

Then, I was dragged into the tower for real... but who cares?
Regressor? Tower? Trials? What are those supposed to be?
An overwhelming talent is about to crush everything in its path!

Official English