Surprised to find Yoon He-ra as the granddaughter of corporate sponsor Mr. Yoon (who'd like nothing better than to solidify their business transactions with a marriage), Seung-jo walks a fine, perhaps unavoidable line. The situation saddens Ha-ni, who finally agrees to Joon-gu taking her out (recognizing the fact anew that he's always been there for her). Serendipitously, the two couples meet, prompting a proposal of marriage later on.
—statmanjeff