User blog comment:Fliu/My thoughts on the Mink Tribe, Beasts Pirates, and possible upcoming events/@comment-24850639-20160201202501/@comment-98.199.6.244-20160201234329

You're right about one thing. Luffy does need a reason to fight either Big Mom or Kaido. But let's not forget at the end of the Fishman Island arc, Luffy did declare that he will defeat Big Mom to free Fishman Island from her. And after hearing about the story about Jack, Luffy did say that he will make both Jack and Kaido answer for it. And after forming an alliance with Law, Luffy did declare that he will defeat all four Yonko.