Sold to the Archbishop of Hell (Black Buter/Kuroshitsuji Fanfic)

Marliegha was never one to be angry, sad, or generally anything other than happy.... until it's all torn away from her.
Marliegha wants revenge. Revenge against the man who took her last bit of happiness from her.
Her anger summons something that could be her salvation.... Or her end.
Sebastian has been inconsolable these past twenty years. Contracts have become meaningless once again. His heart aches to no end. Nothing can cure him. Or can it...?