Love is a strange affection (Sebastian x (OC) Perry)

This is a Black butler love story. No likey, no ready. A young 21 year old Perry is shocked to find six cosplayers outside a cafe. Looking confused as hell when she told them what year it was. Pretty soon they ended up living in her house! Perry soon finds that it's true that they are from 200 years ago. She is determined to help them get back home, and look normal while doing it. But she forgot a vital flaw in her attempts to help them. She had fallen in love with the tall, handsome butler.