Climbing the Tower that Even the Regressor Couldn’t Manhwa

A friend who passed out while drinking suddenly said something strange.
“Suhyuk, I’ve regressed.”
“Regressed?”
“Yeah, I’ve returned to the past.”
“Are you crazy?”
“You’re the only hope left for mankind.”
And so, he was dragged into the Tower, but… it doesn’t matter!
Regressor? Tower? Trials? Whatever they are, I’ll conquer this damn tower!

회귀자도 못 깬 탑 등반합니다, I Will Climb the Tower That Even Regressors Couldn’t Conquer, Climbing a Tower Which Even Regressors Couldn’t Conquer