Dancer Or Soldier Of Time

As soon as the demon king had said, "This is not how I wish my life would have ended," he fell to the ground. A man with blood streaming from his arm appeared exhausted and prepared to collapse. Just as he was about to do so, someone descended from above, grabbed him, and uttered the words, "Kim Woobin. You have fought for this world as a hero, and now I will grant you the wish you have been asking for the last twenty years: I will send you back to Earth equipped with the abilities you have acquired here.

Kim Woobin was suddenly engulfed in a brilliant light, making him unconscious with a smile on his face. 

In addition to feeling unconscious and surrounded by bright light, Kim Woobin also noticed that after a while all sounds had vanished and all he could see was bright light. Suddenly, he heard beeping sounds, the kind you typically hear in a hospital. When Kim Woobin finally opened his eyes, he was lying on a hospital bed. His body was rigid and he was unable to move it much.

Abruptly, the machine beside him began to beep loudly. This caused someone to rush into the room, and it was the nurse. She saw Kim Woobin and quickly ran back outside, only to reappear later with a tall, thin man who was wearing a coat, glasses, and had a slim face. Kim instantly recognised this man. The tall man asked, "Do you know me?" Kim Woobin smiled in response, "Who would forget your slim face you bastard ?"