since that day when you managed to defeat a Rayquaza using your frogadier and made it evolve,you and your greninja became infinitely closer,he became one of your strongest pokemons in battle,after the 7th gym you decide to set up a camp for you and your pokemons,As soon as Greninja comes out of it's Pokéball it walks towards you with it's arms crossed and apparently it was very happy to be with you,greninja was looking forward to the last gym which was in the next town,and you could feel it