The child of a prophecy is born to save the world. "I need to get married to save people...? I'll do the marriage!" The emperor is a young and innocent boy. But... My father interfered with my marriage! "I can't give you my daughter! She will not be becoming empress." "Is my sister just a toy to you?" And my brother too! Will I be able to save the world? <b>Note:</b> This is a one-shot promotional manhwa for the novel of the same name.