Six Flying Dragons (육룡이 나르샤)

A 2015 SBS historical drama (50 episodes). Set during the founding of the Joseon Dynasty, the series follows six key figures including the ambitious prince Yi Bang-won (later Taejong), the revolutionary scholar Jeong Do-jeon, and the loyalist Jeong Mong-ju as they navigate the violent transition from Goryeo to Joseon.