Kdrama/jdrama?

I m looking for a drama about a guy and a girl, I don t remember if they live together, but he decides to move out to a restaurant where he works at. The owner has a daughter whom has a crush on him. On Christmas Day the girl is very sick and the guy has no clue cause he s working out in the street selling cakes dressed as Santa clause. When he finds out he goes to look for her. The guys faints and gets very sick due to over working.