Queen: Love and War
간택 - 여인들의 전쟁 (original)
It tells the story of the cutthroat competition around the selection of the new queen, who is the only person in the kingdom who can have power without being related to the royal family.
Starring Kim Min-gue, Jin Se-yeon, Lee Yul-eum, Lee Si-eon, Son Byung-ho, Do Sang-woo
Watch "Queen: Love and War" on Rakuten Viki released in 2019. It's a drama and romance show, and has a rating of 7.4 out of 10 from Imdb which is usually fine for this kind of show, and is currently available to watch for free.