you and Gladion are going on a pokemon journey together, while you two were training your pokemon in a cave, you feel something heavy and soft fall on you

Gladion: "what was that?"

Gladion wonders and looks to his side, seeing that it was a new species of Pokémon

Gladion: "hm... it looks like it's a pokemon..." Gladion speaks while pointing at the Pokedex, but surprisingly, the Pokedex ends up saying that it was an unknown pokemon