The Man from Nowhere

Both movie involve adult protecting young innocent child. The adult went through mentally and physical challenge to get the young child out of situation

Kim Sae Ron acts as the main protagonist following the same theme, Barby, another long with one of the main themes: trafficking of organs.

If you like action and heart, you'll probably like these films.

With SG you start with some ridiculously (and slapstick) funny moments, and later more spy thriller and action moments.

With TMFN you get some heart at the start and more and more action.

They're not very similar, but they're both entertaining.

However, the story is different. But getting same kind of vibes. However, The villainess is quite unique in its way.
We can't compare both. But you truly like it if you love "The Man From Nowhere".
The first-person opening action scene are enough to put the movie on my favorites' list.

Both are about a man using his smarts and shooting skills (bow & arrow in one and gun and martial arts in the other) to rescue a girl.

Both men are also seeking redemption in some way which makes the quest and need to rescue the girl a quest to preserve what little faith/hope in the world they cling to.