The original story is set before Mewtwo meets Satoshi and his friends in the upcoming film's storyline.
It will focus on Mewtwo's history, goals, and how it became the strongest Pokémon.
(Source: AniList.co)
Type: Special
Genres: AdventureFantasyShounen
Studios: OLM
Sources: Video Game
Status: Finished
Episodes: 1
Season: Summer 2013