Share Read on Mobile Enter Reading Mode Gugudan's Haebin sings theme song for Yoo Yun Suk and Seo Hyun Jin in new 'Romantic Doctor' OST Posted on 2016-11-30 09:54:52 by jaicoree Gugudan'sHaebintook part in a romantic theme song forYoo Yun SukandSeo Hyun Jinin currently airingSBSdrama, 'Romantic Doctor'! Comment