Low effort action flick but still acceptable

A standard action Korean flick, if it weren't for the scarce elevated violence it wouldn't have been as watchable. The writer seems to be slipping a bit too much for what would have been obvious. The main character is a boxer and that's how we were introduced to him but being a boxer didn't play any role into the narrative. There were many other examples of that. More often than not, whenever a character is trying to act "cool" it came across as cheesy since there is a clear lack in world building and character development.