This video fascinates me. I've never seen people with knives fight like this but the guy on the left looks like he's been honing this skill for years maybe decades. Always keeping his body a whole arm's length, using his left hand as a distance gage, to parry, distract, and blind his opponent while striking. He throws a fake and a variety of short counters and full force strikes. Quickly closes the distance leading with his legs first. That final blow...he's stabbed someone before through the top of the skull before to know what the outcome was going to be. The guy on the right had no idea how outmatched he was.