Tales of the Five-Ball Trainer is an ongoing series following Roy Ackerman, who wants to follow in his late father's footsteps and complete the journey he never got to. Pokémon are mysterious, intelligent creatures that seem to have been created for the purpose of battle, can fluently understand human language despite not speaking it themselves, and are surrounded in mysteries and logical impossibilities. A lover of science and adventure just as his father was, Roy hopes to fulfill the dreams of both him and his father by becoming a great Pokémon Trainer, exploring as much of the world as he can, and making a huge discovery about these curious creatures that have baffled scientists for as long as they've been around.

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Tales of the Five-Ball Trainer is a retelling of the classic Pokémon story reimagined for an adult audience. A more mature version of Pokémon for newcomers to the franchise as well as those who grew up with the series. It combines elements of the games, anime, manga, and various other sources. Tales of the Five-Ball Trainer deals with the usual adventure, friendship, science, and dreams, as well as topics including politics, war, trauma, abuse, and terrorism.

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In addition to being a more adult oriented story, Tales of the Five-Ball Trainer aims to tell a story more grounded in realism. Certain changes and additions have been made to the lore for a more consistent and realistic approach.