The King in Love[8] (Korean: 왕은 사랑한다; RR: Wangeun Saranghanda; lit.

The pre-produced drama aired on MBC from July 17 to September 19, 2017, on Mondays and Tuesdays at 22:00 (KST).

[9][10] Set in the Goryeo dynasty, it tells the story of a young and ambitious monarch named Wang Won (Im Si-wan) with a desire to conquer, and two people who shape his destiny; childhood friend Wang Rin (Hong Jong-hyun) and a beautiful young woman named Eun San (Im Yoon-ah).

But on the other hand, his childhood friend Wang Rin also fell in love with Eun San at first sight.

Even though he loves her so much, he still hid his affection for her because of his duty to his Crown Prince and because he doesn't want to hurt his best friend's feelings.