My wife and I went to Japan in 2023 and got to visit an actual samurai residence in Kanezawa. We saw his real armor and swords, as well as a somewhat hilarious letter of accomadation given to him for his effort in killing a rival warrior. It said something like "we would like to honor and thank you for your relentless effort to kill so-and-so and for bringing us his head" and then he was awarded additional land for it.
