Alright so head cannon

So Mu is clearly meant to be Atlantis/land of Mu. SUPER advanced country with super weapons.


Davey said his boys would come to finish her off someday it's a promise

Joy Boy tries to save Imu.

Something happens Mu gets destroyed sea water rises, probably suicide attack from super weapon by Imu. Odds are it's the same thing that created devil fruits

All the souls get absorbed into Imu who is basically a living devil fruit.

Some escape and become mythical devil fruits

Imu is the sole survivor

Davey rolls up like "Yeah I'm fucked but my boys will get you it's a promise"

Imu summons shadows and makes the world gorosei.

World government forms because no one can stop Imu's slaughter so better to be lap dogs then let genocide happen

>>720055493
>He doesn't know

>>279875816
Ancient Mulian Civilization build them. They also build the stone spheres in Japan.