What people are ignoring is opening the borders is the end to kozuki odens story.
Wano has two tyrants
Oden has 2 swords he passed down.
Oda chose to give enma the kaido hype despite both swords being used
And the ame no habikiri is the snake slayer sword the sword literally famed in japan for slaying the yamata no orochi
Oda has built this story on smbolism and im damn sure odens 2 swords will be used to free wano from their respective tyrant.
Wano has two tyrants
Oden has 2 swords he passed down.
Oda chose to give enma the kaido hype despite both swords being used
And the ame no habikiri is the snake slayer sword the sword literally famed in japan for slaying the yamata no orochi
Oda has built this story on smbolism and im damn sure odens 2 swords will be used to free wano from their respective tyrant.