Black Knight
흑기사 (original)
A successful executive determined to do whatever it takes to protect the woman he loves, meets a travel agent, who may be linked to his past.
Starring Kim Rae-won, Shin Se-kyung, Seo Ji-hye, Chang Mi-hee, Shin So-yul, Kim Hyun-joon, Han Ji-Sun, Park Sung-hoon
Watch "Black Knight" on Netflix released in 2017. It's a drama and romance show, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of show.