The Woman Destined to Save the King

The 'human antidote' trope, but in period-drama dress. Got my hopes up because of Ki Hyun-woo, but the story's a bit too by-the-numbers, so it's a little disappointing. It's a sageuk in costume only. Ki Hyun-woo's tears got me choked up though. I like the quick pacing but overall it's just so-so.