So u're just gonna chalk up the scabbards hurting Kaido to psychological damage

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How do u justify all the Supernova hurting Kaido then? What does Kaido have to fear about them?
Well, I understand ur perspective on this now, it's a very roundabout way of looking at it but if this is the "criteria" u've established for hurting Kaido then it computes why u think Sanji will be incapable of hurting him. This logic is flawed imo but it is what it is 🤷🏿♂️