She was just going to a party with her friends. And the requirements is to dressed up as anime characters. So yeah' as an anime fan, that awesome, a party while cosplying your favorite character.
So she dressed up as Kushina Uzumaki.
Her favorite character from Naruto.
While drinking some beer, all of a sudden she got dizzy and pass out.
Then she wake up on a forest, like what the heck, did her friends leave her here.
"What the fuck, it's not funny guys" she yelled looking around for her friends thinking it's a prank.
But she gasped shocked with her different voice.
'My voice'
"Ugggghh" she groaned clutching her head. Foreign memories flooded her head.
After few minutes of sorting those memories she finally understand what's happening.
She transmigrated as Kushina Uzumaki.
"N-noo i don't want this, Dattebane!!" she said while getting shocked by the "Dattebane" thing.