Pokémon Legend

Inexplicably crossing into this world, Natsui Yu arrives in the Kanto region with a Ralts. Ash, Misty, Brock, Pikachu, Team Rocket, Professor Oak… Mewtwo, the three legendary birds, Zeraora, Meloetta, Deoxys… Catch rare Pokémon, evolve through bonds. Starting from the Indigo League. — Description from novelcodex.org