Wild theory with very little basis
Only one man left Wano after Oden. He was also said to be a legendary “Craftsman”
Frankys parents were pirates who left him in Water 7.
Interestingly met he Oden when he was alive. The sort of forshadowing that Oda likes….
So Franky is the actual descendant of the Shimotsuki clan and gone down the route of master craftsmen whilst Zoro in law/descendant has gone down the route of Master Swordsman
Thoughts
Only one man left Wano after Oden. He was also said to be a legendary “Craftsman”
Frankys parents were pirates who left him in Water 7.
Interestingly met he Oden when he was alive. The sort of forshadowing that Oda likes….
So Franky is the actual descendant of the Shimotsuki clan and gone down the route of master craftsmen whilst Zoro in law/descendant has gone down the route of Master Swordsman
Thoughts