What are the strange endings of Korean dramas?

In order to give blood transfusion to the grandson of a car accident and change back to the original appearance, a woman is doomed to miss out on Korean PD. However, there is a surprise at the end of the film, that is, the old man Park, who has always liked the hostess, also saw the youth photo studio. After he came out, he became a young guest star from Kim Soo Hyun, riding a motorcycle to drive the hostess on the road. This is the end. I hope I can help you!