In episode 36 of the Pokemon XYZ series, it shows Professor Sycamore/Platane approaches Ash and Co. and tells him about "Bond Phenomenon" occurred with Ash and his Greninja (which they explain in the episode) The overall "form change" of Greninja is probably an artistic liberty of the animators to show the "bond" between Ash and Greninja, whereas "Bond Phenomenon" is referencing Pokemon Amie.
uh
ok
It's activated via Z Crystal.
>When the Trainer and Pokémon’s wishes resonate with each other, and both release their full power together—the result is the explosive force of a Z-Move!
Mega Greninja
>>27757895
>Pikachu was weak as fuck when seperated from Ash
>couldn't even blow up Team Rocket
are they hinting at something there?
>>27758171
Ash doesn't have a Z Crystal, however Greninja was the first evolution after they meet Zygarde, so maybe Zygarde being there replaces Z Crystals.
>yfw Ash has a Z Crystal inside his body
>>27758383
>yfw when ash is a living Z Crystal
>>27757895
UH DONT YOU MEAN KIZUNA GENSHOU?
>>27758458
He was an aura warrior or whatever, so for all we know he could be.
>>27758458
> look at his cheeks
> Z
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