Contact || Tokyo ghoul x Harry Potter || Au || crossover

Ken kaneki was being chased by people in cloaks, they were holding some sort of stick?
He was very confused and ended up getting caught when he ran into a lamppost.
The woke up at a school and was given two options
Form a contract
Or
Suffer in a dungeon until he died
_____________

This is an A.U
Also this is my first story TvT
Soz if it's crap :)