In Act 13, a man named Shin meets Usagi and Mamoru, telling them that he has completely lost his memory, but that he can remember them, and that he likes flowers, nature, and the ocean. Usagi wants to help him, so she and Mamoru try to gather things that he likes to help him regain his memory. He does regain his memory - but not through Usagi's help. Needing more help to capture the princess, Queen Beryl awakens Shin as Kunzite, the last of the Shitennou.