There are lots of smaller groups of people from all over the world who are likely to follow a code similar to Bushido. However, none are explicitly Samurai like in nature. The closest you might get are the The Sun Warriors or the Yuyan Archers, both of the Fire Nation. If neither of those are fitting enough for your character, you're free to have him hail from a village, small town, or even a small group of people that doesn't interact much with the nation's capital, leaving it free to develop its own code of honorable conduct. We recommend selecting the Fire Nation, as it's the most likely candidate for something of Samurai nature, but it's not necessary. Any group of people who live in smaller communities are capable of following Bushido.
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There are lots of smaller groups of people from all over the world who are likely to follow a code similar to Bushido. However, none are explicitly Samurai like in nature. The closest you might get are the The Sun Warriors or the Yuyan Archers, both of the Fire Nation. If neither of those are fitting enough for your character, you're free to have him hail from a village, small town, or even a small group of people that doesn't interact much with the nation's capital, leaving it free to develop its own code of honorable conduct. We recommend selecting the Fire Nation, as it's the most likely candidate for something of Samurai nature, but it's not necessary. Any group of people who live in smaller communities are capable of following Bushido.