I'M BAAAAAAAAACK! (Cricket noises) Dangit. Moving on! Our story (challenge) today is the Phantom Thieves (sans Mr. IHOP himself) getting sent to the world of Pokémon Mystery Dungeon: Explorers of Sky but with a twist: all the current Pokémon up to Gen 7 exist so that they can become their proper characters. Yes I have already decided their forms. Ren is a Zoroa, Ryuji a Pancham, Ann is a Purrloin, Morgana is a Meowth of Alola, Yusuke gets turned into a Riolu (not because ice but because Riolu and Lucario are quite composed like him), Makoto gets turned into an Abra (so she can eventually evolve into an Alakazam because she's one of the smart ones and Alakazam has a 5,000 IQ), Futaba will be a Beldum (again Futaba is one of the smart ones and when Beldum evolves into Metang and Metagross, it gains vast brainpower and multiple brains plus Beldum are technologically inclined), and finally Haru will of course be a Ralts so she can evolve into a graceful Gardevoir. The Partner will still be around too and will be a Pikachu named Yuki. From there, the gand helps Yuki get her treasure back, she joins the Phantom Thieves, and they all join the Wigglytuff Guild.
Now for the basic rules: everything follows the Mystery Dingeon formula, however, upon entering a dungeon, the Thieves gain Pokémon sized versions of their Metaverse outfits due to the mysterious nature of the dungeons but since this is Pokémon, no Personas only Pokémon moves. From there, it's free game including the story. If anyone would like to get this rolling, PM me, put the creators of Pokémon, the Mystery Dungeon series, and the Persona series in the credits, and above all else, have fun.