Ever since Squishy and Z-2 of the two Zygarde are written out of script in the Ultimate Journeys season of the Pokémon main anime being no longer relevant, Greninja, Ash's former Trained Ace Pokémon, has finished off his mission to destroy the evil roots caused by the evil giant rock creature to save the entire Kalos region. Right after managing to do so, what do you think that Greninja will do, do you think that Greninja will rejoin Ash's party, or move out to live into Professor Oak's Laboratory, or what? Why? Please let me know, thanks. :)