The group arrives at the Pokémon League Admissions Center, and Ash signs up and is assigned testing number 7. Nearby, Jessie, disguised as a schoolgirl, complains that she didn’t get number 7, causing Ash to briefly become suspicious. A Nurse Joy enters and an infatuated Brock follows her. Ash is told by the head instructor to leave all his Poké Balls at the counter, as well as temporarily leave Pikachu in Misty’s care. Nurse Joy, who turns out to be from Fuchsia City, tells Ash and his friends that she signed up for the exam because it was a convenient way for her to train to become a Pokémon Master.
(Source: Bulbapedia)
