Remember in lougetown arc Ippon Matsu talked about the cursed meitos the kitetsu blades when the snadai kitetsu was revealed.
well I always wondered if zoro would possess the supreme grade shodai kitetsu and I have an hypothesis that one piece already revealed another kitetsu which is currently owned by the ghandi gorosei because the sword he is carrying has the same hilt as the sandai kitetsu but he might possess the nidai kitetsu or the shodai kitetsu. either way do you think zoro would replace his kitetsu for the nidai or shodai kitetsu if he came across one. but speaking of meitos one piece is about to reach the wano arc (this year hopefully) so there must be a samurai wielding a kitetsu maybe it could be the shogun but it's still debatable if it's the nidai or shodai kitetsu. and of course the kitetsus are cursed blades so it's assumed no one wields one as stated by Ippon but I doubt it since it's the new world and curses are probably the last thing to worry about not to mention zoro was confident about using one so there might be wielders what do you think?