Hoegwijado Mot Kkaen Tap Deungbanhamnida

A friend who passed out while drinking suddenly said something strange.

"Su-Hyeok, I've regressed."
"Regressed?"
"Yes, I've come back in time."
"Are you crazy?"
"You are the only hope for humanity."

And then I was taken to the tower… But it doesn't matter! Regressor? Tower? Trials? Whatever it is, It doesn't matter but what I know is I'll conquer this goddamn tower!

(Source: KakaoPage, translated)