I think most Americans probably believe that our relationship with Japan began in 1941. In fact, obviously, it began in 1854 when Commodore Perry sailed into Yokohama harbor and threatened to burn it down unless they would open up to trade with us. The imperial impulse was first ours historically.
I think every culture - you can call it an American Ronin, a medieval knight errant, you could talk about 'Shane.' There is an archetype that I think is actually common to a lot of cultures, and even the Clint Eastwood stuff was probably as influenced by the Japanese stuff, and yet done by an Italian.