Valentine

Valentine kills people. Sometimes for fun. Sometimes "just coz she felt like it". Sometimes it's for a job.
She's a serial killer. Nothing more. Nothing less.
She's not on the path of redemption and she doesn't have a solid reason like a 'horrible past' or a 'mental problem' for the way she is.
She just likes to kill. And hug the stray cats she finds on the streets.
So when she gets put in the body of one of the main protagonists in her favourite book series, she is STILL a serial killer.
And she finds it so damn hard to keep herself from killing the man with the cute dimples and frustratingly kind heart.
And when she finds out him and his friends are the characters doomed to an early death in the series, she knows she can't let anyone else but herself take their lives. And she vows to destroy every single person in her way.