yesterday i was watching episode 324 (The Hometowns Dance as the Ship Sails Forward!)
its just after the straw hats has defeated cp9
i couldnt find the manga of this but in the episode they would go back to all hometowns of the straw hats.
at luffy`s hometown you hear the mayor say: what does garp thinks hes doing?!
letting his own grandson cause such an terrible incident.
then he says!!:whats wrong with those three guys?(i thougt first he talk about garp,dragon,luffy but!)
then he says: i wonder if dadan knows about this (dadan doesnt have to do anything with dragon so!
maybe its a hint ace,sabo and luffy!