Toby is trapped in the Oubliette and nearly loses his mind when he is finally taken to see Mizumi. She reveals that as Jareth's heir, Toby is bound to carry his title and his heart, which Toby is unable to sustain. To explain, she divulges more of her past with Jareth and how they initially met. Mizumi had instantly fallen in love with him, but Jareth's interest in her had been fickle and she demanded to see his heart. In response, Jareth challenged her to find it within the Labyrinth; if Mizumi found it, his heart would be hers, but in exchange, she gave him her word that she would never allow his Labyrinth to be harmed. When she could not find his heart, Jareth insulted her - though she had given everything she could give him, he still found her shallow. In the present, Toby allows Mizumi make him the vessel of her will in order to save his friends and the crumbling Labyrinth.