Masquerade
광해, 왕이 된 남자 (original)
Starring Lee Byung-hun, Ryu Seung-ryong, Han Hyo-joo, Kim In-kwon, Jang Gwang, Shim Eun-kyung, Park Ji-a, Shin Jung-geun, Jun Guk-hyang, Lee El
It's a drama and history movie, and has a rating of 7.8 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Austria.