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I'm pretty sure Kaiyodo is working on making a Takeya style Samurai Revoltech, probably resembling Sanada Yukimura's armor. As a counterpart to their Knight Revoltech to go with their horse. They talked about doing something like that (when Sanada-Maru was the craze) then went silent, but the Knight came back out of nowhere so it might be a matter of time.
That could potentially be the definitive 1/12 size samurai figure.