My first korean drama was City Hunter -- about a month or two before the same friend that had introduced me to j-dramas with Hana Yori Dango, introduced me to k-dramas with City Hunter. Up to then I stubbornly refused to watch anything that wasn't japanese and Hana Yori Dango style (as in light, romantic and funny), but City Hunter was so different it truly hooked me... Now I like both styles, although I do prefer heavier, deeper dramas ever since :)