A Demon Contract

WARNING: NOT AN ORIGINAL STORY
DOES NOT BELONG TO ME
THE ONLY THING THAT BELONGS TO ME IS MY CHARACTER
ALL RIGHTS RESERVED
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Okay, that aside, now onto the description.
Ciel Phantomhive has contracted a demon. Has promised a demon who now goes by the name of Sebastion Michaelis his soul in exchange for revenge. Revenge for this who wronged his family.
But what will happen of the contract is not fulfilled and he dies with his soul intact.
What will happen when generations later a girl by the name of Cecielia Phantomhive, the first female to the Phantomhive family name is born with the demons mark on her.
What will happen when a reaper who has a chance to right a wrong.
What will happen when Reaper Will sends Cirl Phantomhive's distant granddaughter to the past to help Ciel complete his contract. Souls that weren't meant to exist in the Reaper Library are taking up shelf room from those who were meant to exist.
Cecielia Phantomhive, her great (times about twenty) grandfather, a demon butler, a contract that managed to survive the grasps of time, three silly servants; that have remarkable skills, Tanaka, a demon hound, two reapers, an Undertaker, a queen, two angels, and a new set of powers all combine to make this riveting tale.