Oh really? In Lithuania, murder is also illegal. It traces back from the spoken tradition of the ancestors. Some recent analysis has found traces of this social ban in 800 years old folk tale, Spruce the Queen of Serpents, in which, as a punishment for murder, the killers were turned into trees. It is weird how Lithuanian culture shares similarities with the Japanese! There must have been cultural connections at some point in time...
I know you yanks like to go around shooting each other, but if you absolutely must challenge someone to a duel - do be so kind as to use your sword instead.
Now I am worried I might have committed a faux pas unknowingly. I mean, they are so polite they won't point it out. So now I am sitting here, years later, wondering if I might have, you know, murdered someone in Japan.