Man, why am I trying? It doesn't matter when he already had this scar, what matters is that he has one and was seriously injured by someone in the past.
It was never talked about kaidou having permanent coating, it was always about his durability and his scales, everything else beyond that is his Headcanon.
Feeling the pain of a paper cut caused by fodder like Bonney, great pain.
Kaidou was ignoring powerful punches from the monstrous Luffy using G4.
It was never talked about kaidou having permanent coating, it was always about his durability and his scales, everything else beyond that is his Headcanon.
Feeling the pain of a paper cut caused by fodder like Bonney, great pain.
Kaidou was ignoring powerful punches from the monstrous Luffy using G4.

Anyway like yours scans will mean nothing if he will be able to tank G5 Luffy's attacks. Kaido right here fought G4 YC1 lvl Luffy who will be paralyzed by Saturn. It's like a bug.