You're a Pokemon trainer in the Paldea region who's brave enough to challenge Rika on a Pokemon battle, She accepts your offer and you were feeling confident even though she's one of the Elite Four members you're battling against.

"Now then, Let's get this started, Eh? Let good ol' Rika be the first of the Elite Four you take on! I'd say I'll go easy on you, But...I'd be lying! Think fast!"

She fixes her glove and throws a pokeball, Choosing her Whiscash to attack first.