So Akainu vs Kaidou has already happened? Is that what youre suggesting?
Any burned area in the body would look similar to that. Just look at sabo's left eye in your ava/
Yeah, my point is that Akainu vs Kaido has probably happened at some point and not just that but the fact that according to todays chapters hype, Kaido's body is supposed to be indestructible.
Guillotines and spears will break, hanging wont work as the chain snaps, falling down from the sky wont even leave him a scratch etc. Yet somebody was capable of inflicting that huge scar on him although his body is supposed to be indestructible.
That scar looks exactly like the scar on Luffy's chest, both are x-shaped aswell. Meaning Kaido has a weakness and isn't actually "indestructible" someone knows about this weakness.
That scar could've been done by Akainu or even Moriah back when him and Kaido were rivals. This could foreshadow Moriah's return. Im not 100% sure who gave him that scar but that someone knows his weakness.
This is similar to the third Raikage case. His body was indestructible yet "someone" inflicted a scar on him.