My friend, who had passed out while drinking, suddenly blurted out something absurd.

"Suhyeok, I'm a regressor."
"A regressor?"
"Yeah, I returned to the past."
"Are you out of your mind?"
"You are humanity's only hope."

And then I really got dragged into the tower... but who cares?
Regressors? Towers? Trials? What's any of that to me!
An overwhelmingly talented powerhouse arrives, ready to devour everything in his path.