The King: Eternal Monarch (Deo King: Youngwonui Gunjoo / 더 킹: 영원 의 군주) (2020) imdb

Title: The King Eternal Monarch maze [ost]
Rating  (8.2)
Plot : A modern-day Korean emperor passes through a mysterious portal and into a parallel world, where he encounters a feisty police detective.
Contributor : Adhora00