In that panel of Kaido in the magma, it even looks like his body is melting away as he is missing chunks of his body lol.
Man, this dude should’ve just challenged an Admiral to a fight if he really wanted to die so badly. Take Akainu to Punk Hazard and Kaido would’ve been incinerated in 30 minutes or less.
As much as I think this defeat was pathetic, it really does look like Kaido’s body is boiling away which is a classic tell that this will kill him..