Japanese magazine Telubi-kun has revealed a special part of the Pokémon the Series: Sun & Moon anime. During two episodes on September 14 and September 21, Ash and Pikachu briefly return to the Kanto region for a school project. Ash gets to pay a visit to his old Pokémon and is able to meet up with his original traveling companions – Brock and Misty – and battles them once more. Brock’s main Pokémon appears to be Mega Steelix while Misty is partnered up with a powerful Mega Gyarados. You can view some anime screenshots from these couple episodes in the image below:
Source: Serebii
Pokémon Blog 
Reblogged this on Nitwit's World.
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Whoa! It’s been years since I last saw those two in animation alone.
I guess fan art predicted the future again. lol
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Nice! Except Brock and Misty shouldn’t be in Alola XD
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LOL
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