Ace in the side.
Japanese swordsman born 1584.
A kendo instructor told me that the 17th century French swordsmen were on a par with the Samarai....but Musashi towered over them all.
He retired and became a teacher....The Book of Five Ring is based on his teachings.
If he only had five rings he can't be the greatest. Jordan had six, Kareem had six, and Russell had eleven!.