The samurai from feudal Japan would find themselves in a difficult mess in today's world. As much as I am a fan of this time period, I do find it appalling to know that the samurai were arrogant and brutal to the commoners, as so much that they could cut one down without any reprise. The key is to apply the virtues of Bushido for the warrior of today. To what that applies to opens up many possibilities to discuss.
Based on what I see in your profile, these schools in your area teach Japanese sword fighting:
You'll never be an actual samurai because that time has come and gone, but you certainly could learn kendo, become proficient at it, compete, teach, join its international community, etc.
Ah nice thanks!