Lillian, a timid young lady about to be sold off to a notorious duke. What awakens on a desperate night is—the [strongest villainess] sleeping inside me! "Hey, will you give me this body?" The hidden Lillian, stealing the crown prince's heart for revenge. The surface Lillian, melting the heart of a former slave with pure love. "Tell me, which one is the real you...?" Who is it that the men truly love—either of me? A new-sensory, sweet yet dangerous square-love story featuring two polar opposite "Lillians"!