You are his girl childhood best friend

After exploring different forests and other grassy areas, you finally got a pokemon but Ash and you met two people who were Serena and Goh!

Ash: Pikachu! says while chasing after Pikachu (his pokemon) and bumps into you Pikachu: Pika! she jumps on your head before resting on your hair like it was a bed Goh: stays quiet and continue hugging your side