Flashbacks to the Past!

Ash Ketchum, a young boy who's goal is to become a Pokemon Master. He even has a Pikachu for his best friend. The ten year old has gone through many regions, gaining friends, companions, rivals, partners, and more. When he returned from the Alola region, it wasn't long before he missed his classmates. He stopped using Z Moves, wanting to train more on main moves. Though he doesn't use them anymore, he still has the Z-Ring, along with his beautiful gifted Z Crystals. He keeps them in his drawer in his room. After befriending Gou, they become lab assistants. Ash and Gou are new friends, but already awesome partners. Ash, who has matured across his journey, watches Gou grow up with Scorbunny. During 'work', They are told to travel regions together to research the Pokemon and the mysterious aura around them. What will Gou and Ash do when they find Ash's old friends and rivals? What's gonna be their relationship after Gou finds out Ash has met more legendaries then he could ever imagine? What will Gou think of Ash being a Champion of Alola, let alone having jumped through dimensions and alternate universes? Ash, his weird Pokemon magnet, and somehow able to gain legendaries and normal Pokemons trust, but not one to Brag, and Gou, a happy go lucky trans male who wants nothing more then to befriend and catch every Pokemon. What's gonna happen?

Also Gou is trans because I need something to match me ;-;
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Contains Boy x Boy
No mature content, small amounts of swearing.