Yamato's devil fruit is likely based on a Shisha on a lion dog from Chinese culture , we Chinese call the 麒麟 qí líng ,in the folklore it says that a king summoned this lion dog to defeat a sea 'DRAGON' so even though it's slim there's a chance that Yamato will defeat her father and just maybe become the temporary Shogun cuz we know that she admires Oden so again it's likely she will carry Oden's will and open the border . This prediction also supports my other prediction about Momonosuke will join the straw hats , I know I know before I thought this prediction I wanted Yamato to join the straw hats but I think Momo will read apart of Oden's diary and be inspired to take the steps of his father and join the second pirate kings crew and after reaching Raftel I suppose Momo will go back to Wano and take his place as Shogun or just maybe stay with the Straw Hat's who know.
I would like to hear your predictions