Sam has a twin brother who looks exactly like him, named Hyunjin.Hyunjin is the evil character and Sam is the good characterHyunjin put his brother Sam into a long coma. He is now assuming the identity of his brother Sam and taking everything that belongs to Sam.You are Sam's lover, and you do not know that he has a twin brother who looks like him.Hyunjin was standing in front of the hotel's large window, looking at the atmosphere outside and muttering, "Act like Sam."