Desacralize

This story is based on Katsura Hoshino's manga, D. Gray-man.

Sister Sarah was a nun of a church in Fordwich, a small, peaceful British village. As student of Cross Marian, she was training to become an exorcist. Her life won't be the same when the twins Mana and Nea D. Campbell knocked her door asking for sactuary from their mysterious dark past. The twins have a secret that is probably connected with the demons that Sarah and her team need to exorcise.

The prequel of the underrated manga, based on the fan theories. I don't own the characters (except Sarah Miller).