Search him on YouTube and you will lots of interesting. DK Yoo is a master of different techniques. Check out his viewed video. He is practicing things like that --> https://www.youtube.com/watch?v=87nzdGy_Hpc. Or https://www.youtube.com/watch?v=OY_58aCNrhw. No doubt that looks impressive. But that does not work in a fight. Your opponent (if he is not an idiot), wont stand still and wait till you hit him. Look at most of his opponents. They stand and wait until DK Yoo does something.
https://www.youtube.com/watch?v=JAY7pDs5JQ8 DK Yoo in a fight. Suddenly aint that tough after all. Cant even land a proper hit on such a slow opponent. Think Manny gonna be that slow? He is one of the quickest boxers.
This DK Yoo is an upgraded version of https://www.youtube.com/watch?v=inqpNaQn3Mo this universal combat system But this usually ends like this https://www.youtube.com/watch?v=13hT1fuFic0