The profanity would make characters from Glengarry Glen Ross blush, though it works well because isnt forced or meant to represent more than it is: just cursing and ignorance. This is a film full of genuine emotions and relationships. Superbly acted and a fine effort of directing. A minor flaw was that it was a little too overt and on the nose especially with it's flashback scenes depicting the characters past; sometimes they felt like exposition that could've been presented in a more organic manner rather than being conventional using flashbacks. But the final few flashbacks work extremely well. The scenes right before the hospital scene and final scene in the street are excellent and brave, it left me winded as if I'd been hit in the stomach by one of Hang Soo's punches. Those additional scenes in the end could've been a little less sentimental, but it that point the film earns it and it does help tie up any loose ends. But for me, it would've been just as powerful if we, the audience, were left hanging like Hang Soo. I don't think the director needed to connect the dots as much as he did but again, it doesn't take away anything from the film and considering it's his first, I'll be looking forward to seeing what he does in his upcoming films.