Akuma no Hanayome: Saishuushou

Deimos was once a handsome god who shared a mutual love with his beautiful sister. Cast down from Olympus for their forbidden bond, he was transformed into a demon while she became a decaying corpse resting at the bottom of the sea. Now, Deimos faces an impossible choice between his original sister and her living human reincarnation. As his sister’s jealousy intensifies, the young woman finds herself terrified and struggling to comprehend her bewildering predicament.