Do Min Joon
Actor Name: Kim Soo Hyun
Do Min Joon (Kim Soo Hyun) is an alien who landed on Earth during the Joseon era. He has good looks and excellent physical abilities. Being close to perfect, he develops cynical views towards human beings during his stay on Earth. 400 years later, he teaches in a University as a professor. He meets and falls in love with his student, Chun Song Yi (Jun Ji Hyun), who is a human.