Kim Dong-hyun (김동현; born October 20, 2004 ), known professionally as Leehan (이한), is a South Korean singer under KOZ Entertainment. He is a member of the boy group BOYNEXTDOOR.
Also Known As：Kim Dong-hyun·김동현·이한·BOYNEXTDOOR·보이넥스트도어·
Biography：Kim Dong-hyun (김동현; born October 20, 2004 ), known professionally as Leehan (이한), is a South Korean singer under KOZ Entertainment. He is a member of the boy group BOYNEXTDOOR.
