Wait, are you talking about Yojimbo? Did you not play FFX? He is very likely a Primal of some sort considering he was a summonable in past games. I mean sure the name Yojimbo has been used on minor enemies and bosses, but he looks exactly as he did in FFX when he was a summonable.
Again, he is likely a divine manifestation of the worship of money and the desire to have it. Considering in the Hildebrand Storyline (not entirely canon) that one man was able to put a chicken on top of some boxes and summon a primal by remembering a friend then it is entirely possible that Yojimbo was summoned by some similar means by criminal elements within Hingashi. It may be that money alone sustains him, or that he just uses it to buy more crystals to sustain himself. If so, he is a very different, subtle and intelligent Primal from those we have met before.
Currently Yojimbo is not listed as a Primal because the story has not revealed him as such. So he could still be something else entirely, like a Voidsent which, as Hildebrand's story also showed (maybe not canon), can indeed live in the world without much trouble and even take an interest in mortal commerce.
