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He is the emperor of heaven. But he gave up everything for her, came to the underworld, and risked his life to save her twice, but his soul was not saved. She is the biological sister of the Demon Realm Palace Master. Once he lost his memory, everyone who came to his world said that they had an evil fate that was not tolerated by the world. Only she believes that even if her love is separated by mountains and seas, she can make them level!