I Heard the Gods, and Let Her Take My DoomEpisode 21

In the past, Cassandra appeared to possess everything her elder sister desired: a gentle husband, endless devotion, and a life wrapped in beautiful dreams. Consumed by jealousy, her sister sacrificed her to the abyss. Given another chance, the elder princess claims Morpheus, the God of Dreams, certain that she has stolen Cassandra's happiness—and leaves Cassandra to marry Phobos, the terrifying god who commands fear. But Cassandra smiles...