Yes, Pokémon Chronicles has been canceled. They ran out of material from the Japanese side of things so they were unable to continue with it.
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It's Called: Pokemon Chronicles: "Cerulean Blues" "If you ever have any questions about Pokemon you just let me know!"
In the Japanese opening to Pokemon Chronicles: "The Legend of Thunder," your rival (referred to as Silver) can be seen beating the crap out of Jimmy and his Pokemon.
Most Pokemon media (the anime, Chronicles, most of the manga) are all Kodomo, although there was one Shojo Pokemon manga, but I don't know what it was called.
Be careful not to press B when having a Pokemon evolve because that can cancel it.
To cancel the mission is to abort the mission.