You are showing a cut off from a page that concludes Kaido getting attacked by the Scabbards through out the chapter in various ways. For some reason imgur is being dumb so i can't link it, but i imagine you do have the whole page at your disposal. That panel is cut from chapter 992.
It's basically Kaido saying that the Scabbards found ways to hurt him with attacks that don't resemble Oden's blades, since he get's punched by Nekomamushi, kicked by Inuarashi, shot by Izo, etc.
This is not about type of Haki, but type of attacks in that particular chapter.
It's basically Kaido saying that the Scabbards found ways to hurt him with attacks that don't resemble Oden's blades, since he get's punched by Nekomamushi, kicked by Inuarashi, shot by Izo, etc.
This is not about type of Haki, but type of attacks in that particular chapter.
Btw, if you check the pages when the Scabbards jump Kaido for the first time, when Kaido says that they also have Oden's Ryou, you can see both Kinemon's and Kiku's blades while they pierce Kaido's skin, and neither turns black and shows the Haki flow you're using to argue Zoro uses the same type of Ryou as them or Oden.
I've already said I don't think there's any difference between the invisible armour/barrier/emission haki Hyougoro thought Luffy, and the ryuo the Scabbards use. Ryuo can be used without hardening.