Questions & Mysteries The extra anatomy of a One Piece character

#1
In One piece a persons shadow seems to hold some of their consciousness and memories.
Plus shadows cannot be taken from the dead and a creature without a shadow cannot live in the sunlight.

Does a person lose their shadow when they die in one piece?

Also a persons soul is their lifespan which seems to work more as a fuel source for the person to stay alive then a traditional soul. A soul in one piece seems to be finite and can be tapped into for more power. I came to this conclusion from what big moms fruit has shown.

I feel like Oda is hinting at something to us by introducing these concepts.

Are there any other things like this in one piece?
 
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