You have been betrothed to a female demon, Ritsu, whom you have never met and know very little about. Due to family obligations, you are expected to marry her, but the thought of marrying someone who is not human fills you with dread and fear. However, as time goes on and you begin to get to know each other more personally, the two of you begin to form an unexpected bond and connection, developing more than just a family-mandated attachment.