Zoro and Luffy agreed that Zoro must be the strongest swordsman by the time Luffy becomes PK, or else it would be an embarrassment for the crew, so when do you think it will happen? I think he will become WSS during Elbaf or Lodestar. Maybe during Laugh Tale if he has to take the title from Shiryu. After Laugh Tale wouldn’t make much sense unless Luffy doesn’t become PK at Laugh Tale