My Dear Marie (TV Miniseries)

A man named Hiroshi falls for a girl named Marie, but Hiroshi thinks Marie is out of his league, so he builds a female android just like Marie so he can have that Marie all to himself. But one day she goes outside to find hiroshi, and bumps into the real Marie and she suddenly becomes his sister. So now the two have two keep Marie's secret under wraps while trying to get the real Marie to fall in love with Hiroshi.