looks like a remake to me the same story of a rich guy going on his own and opining a shop and a tomboy who pretends to be a boy to get a job at the shop. and they fall in love but the guy doesn't realize she is a girl.
Both of them start with a poor girl dressing as a boy to get a job and support her family, and she works with a guy she hates at first. But Coffee Prince's plot is all about the genderbender, and Tiamo Chocolate uses more plots as the story goes on.