Like other Asian democracies, family politics is not unknown to South Korea. The triumph of Park Geun–hye, daughter of former authoritarian ruler Park Chung–hee, in the 2012 presidential election was in particular interpreted as a precursor of ‘dynastization’ in Korean politics. Nevertheless, up to the present day, political families in South Korea have been significantly less successful in securing offices through electoral competition than their Asian counterparts. Using extensive evidence from statistical and documentary sources, I argue the following: First, South Korean family politicians are more likely to face unfavorable popular sentiment towards their candidacies in elections than family politicians in other Asian democracies. Second, in addition to inheriting their predecessors' political advantages, they are required to enhance their own electoral appeal by properly justifying that their electoral participation is compatible with popular demands for meritocracy and procedural fairness. This argument highlighting politico–cultural requirements, or what I call justifiable narratives, for dynastic succession is empirically supported by case studies of four South Korean family politicians.