Luis_989’s review published on Letterboxd:
I found it quite interesting. The intrigue is very good, although I couldn't help but feel that I needed some kind of prior knowledge to experience better what I was seeing.
The Man Standing Next is also more slower than I would've liked, but it never lost my attention.
It's pretty well elaborated, especially the feeling of the time in which the story unfolds, and the performance of its protagonist Lee Byung-hun is quite solid, I just feel that it lacked more punch and better co-stars for its lead actor.