It was about a girl from our time, living in Japan as an artist. She gets hit by a cart and somehow ends up in the past at the Phantomhive mansion. She is wearing a red dress and has a small purse with her that has a cell phone cover of Kuroshitsuji. She explains that in her time that it was a comic and not real. This leads on in a long stiry where we find out she is actually Sebastian's mate, has the soul of undertaker's mother and undertaker is the son of Lucifer, she gets shot and leads her back to our time where she finds the two guys whom serve Sebastian and they bring her to London to wait for Sebastian's current contract to end. Also sebastian and the others after meeting her in the past wait either 100 or 1000 years for her to born.

If more info is needed I can supply more. When I was reading the story I think it was finished. If anyone one knows this story please tell me what it it!