I really liked the idea of this, but the big hole was the female actors did not look like boxers, even athletes, sprinters have more muscles and abbs, Google female boxers and you will see what a World class female boxer looks like. Covering someone up with multiple layers of clothing and then stripping them off to box convincingly just doesn't work.

Good story , but the things to make the setting real were just not there, and no matter how convincing the ML was as a whole it didn't work, and it didn't help that perhaps the most intersting part of the story, match fixing, was at odds with the fuffy young women boxer comeback, which was totally lacking in reality. The irony being that the most real aggression shown was when the ML was being beaten up.
Perhaps the K drama reluctance not let women any thing less than looking pale and perfect, but in a drama about womens boxing, thats just not the look needed.