ANGEL'S COFFIN (Tenshi no Hutsugi - Ave Maria), by You Higuri. First published in 2000 and first published in North America in 2008.
PLOT:
Marie is a minor noblewoman in the dying days of the Austro-Hungarian empire. She has a massive crush on the crown prince Rudolf, but she doesn't dare get close enough to him to make her feelings known. Then she accidentally summons a demon named Seto who promises he can make Marie's wish come true. As Marie grows closer to Rudolf, Seto finds himself falling for her in spite of her cursed destiny. Will he come to terms with his feelings or are he, Marie, and the world doomed to burn together?
