Lots of “confirmation” articles, and no denials from Hook, so I guess it’s really confirmed. Here are some more details on the story and characters.
Sageuk romance ‘GoongHap’ depicts the story of Princess SongHwa who rejects a destiny of having to marry based on goonghap, 4 royal son-in-law candidates who each has a different Four Pillars, and royal family’s genius goonghap specialist DoYoon who figures out their marital compatibility.
Shim Eun Kyung plays Princess SongHwa and, with unique friendly charm and subtle emotional acting, she’s expected to express a character who rejects a destiny of not being able to marry as she pleases due to her royal blood and daringly leaves the palace to look for her own partner.
Actor Lee Seung Gi takes on the role of goonghap specialist ‘Seo Do Yoon‘ who’s recognized for his remarkable talent in the study of Four Pillars of Destiny and assigned the tremendous responsibility of predicting the marital compatibility between Princess SongHwa and the royal son-in-law candidates. He’s anticipated to show off acting of charismatic features, hidden pain and hovering between reason and emotion.
source: sportsseoul via nate
English translation: tryp96.wordpress.com