Another addition to my theory:
We know Kaido has some fish patterns on his arms, maybe this is the manifestion of the "evolution" of the DF. Which means while part of his soul triggered an evolution of the fruit, the fruit has direct impact on his soul and changed his body (with the pattern) permanently, like Kaido changed the fruit itself.
We know Kaido has some fish patterns on his arms, maybe this is the manifestion of the "evolution" of the DF. Which means while part of his soul triggered an evolution of the fruit, the fruit has direct impact on his soul and changed his body (with the pattern) permanently, like Kaido changed the fruit itself.