So, if Luffy or CP0 were to kill Kaido his devil fruit would respawn, right? What if Uo Uo No mi appears on Nami's Tangerine tree, this would mean Zoro could feed it to either of his swords, Enma, Wado Ichimonji or Sandai Kitetsu as Oda stated.
We all know there are 3 classes for famous swords. 12 supreme grade, 21 great grade and 50 skillful grade. I read manga and it said Sandai Kitetsu does not belongs to any sword class in these above. Which means it is under grade. But my friend told me that Sandai is one of 50 skillful grade. I am confused. Pls confirm me if I am wrong.