Insanely Insane : Sebastian X Yandere Reader: (Black Butler)

A young, normal girl who lives in London near Ciel is what YOU WOULD think. But this story goes nothing like that. You're insane, a scarred past like Phantomhive's, except maybe worse? Murdering is what you do for a living. At every scene of crime after your killings, you leave a white rose petal on the victim's chest. In the small petal is always written in blood: T.N.W.M, which you decided meant "Till Next We Meet."
Everything is so fun! An abandoned cellar under a torn down factory is your hide out. All is fun and games. Everyone is clueless..

...until one day that Ciel and his damned butler arrived.
(currently on hold or whatever)