Miyamoto Musashi is a master of dual swords and is said to be the best swordsman. Kawakami Gensai was one of the 4 hitokiri used Shiranui-ryū and was known for his speed. Sorry for the lack of info there isnt much on Gensai and i just now started reading about Musashi so i dont know much yet but the question just poped in my head and i wanted to see what others thought. I think Gensai