Doomed to Love

Once Upon A Time, Long Long Ago in England...

Her Majesty, the Queen, had 3 families helping her with crimes in the underbelly of London. She had her Guard Dog, the Phantomhive family, who would help solve cases that worried her. She had her Spider, the Trancy family, who covered up the crimes and make it seem like they never happened after the Phantomhives dealt with it. And she had her Alley Cat. The Amoureux family. Their job was the most difficult of all. They snuck into the gangs that committed these crimes in order to get inside information about them, and they gave the information to the Phantomhives. But if Her Majesty wanted a more secretive job to be done, the Amoureux family would take care of it. They were basically assassins being put to use by Her Majesty.

Then one day, a gang that they infiltrated discovered their secret, and the whole family was slaughtered. Little did they know that 7 year old Valarie Amoureux was playing at a friends house during this horrifying attack on her family...

Shortly after this event, the young heiress hired a butler of unknown origins. And he taught her everything she needed to know to be a member of her family... As years went by, the two fell in love and decided to be wed when the heiress turned 16. Before the butler could kiss his bride, she erupted into flames, and burned her, body and soul, to death at the alter...

Or so they were told...

Flashforward,

Sebastian Michaelis, bound to Ciel Phantomhive forever, and Ciel Phantomhive, now a demon, solve cases for Her Majesty, but a new guy and his maid work together with them from time to time. The young man, Grant Abattage, is heir of the new Alley Cat family. And he has a very strange butler with him. They know she's not human, and she's similar to Sebastian, but also different. She also reminds Sebastian of a mistress he used to serve. The butler's name is Valentina Amare. And she is here to right the wrongs the Trancy family did to Lord Grant...

And to herself.