Cheolsu Saves the World

A massive asteroid is about to hit earth! Humanity has failed to stop a giant asteroid from plummeting into Earth, and life as we know it has ended. An ordinary Korean office worker named Cheolsu is somehow given the chance to go back in time and prevent this catastrophe from ever happening. Does he have a chance? Looking for the Evacuation Regression of Cheolsu 철수를 구하시오