In 1998, Toshihiro Ono was asked to write a story detailing Mewtwo's origin to coincide with the release of "Pokémon: The First Movie". The 52-page comic, presented in the form of a flashback, was replaced midway by "The Birth of Mewtwo" animated short, resulting in little connection between Ono's work and the film. Regardless, it saw print as a side story for "" in the July 1998 issue of "CoroCoro Comic". In it, Mewtwo's creator Dr. Fuji takes on the role of a coach for the fully developed Pokémon, while his employers, Team Rocket, test its abilities. Learning of a plan to mass-produce it as a weapon, Fuji approaches Mewtwo and tells it to destroy the lab and Fuji himself. Mewtwo refuses, stating it cannot harm the doctor, who it regards as its father. Once captured by Team Rocket, Fuji tells Mewtwo that he is honored by the statement, and is then killed. Angered by his death, Mewtwo destroys the lab and escapes. In the present, Mewtwo cries in its sleep as it dreams of the events.