I, the Champion, Was Sent by Arceus to Popularize Science on Earth

The protagonist is female, a champion of Kanto, and a non-traveler. In the world, there are Red, Green and others, as well as Xiaozhi, a large collection of characters. However, I haven't watched many animations other than the anime with the protagonist Ash, so the characters are likely to be OOC, so please feel free to comment. The timeline of the Pokémon world shows Xiaozhi traveling in the Kalos region. It has not yet reached the theatrical version. I want people in other worlds to intuitively experience the terror of the mythical beasts. The protagonist has a mythical beast, and guess which one it is. The mythical beast will not appear in the early stage, including during the battle between the mythical beasts, so take your time and guess. A team of Pokémon (excluding mythical beasts): Shark, Charizard, Gardevoir, Lucario, Benguirus, and Carnival Duck. The first part is written casually, just read it. If you want to really start popularizing science, start from the second part.