Princess Serenity is a central character in the anime series Bishoujo Senshi Sailor Moon. She is the princess of the Moon Kingdom and the past life of Usagi Tsukino, the show's main protagonist. Known for her gentle and kind-hearted nature, Princess Serenity fell in love with Prince Endymion of Earth, a love that transcended time and space. Her character embodies grace and elegance, playing a pivotal role in the storyline by symbolizing hope and the eternal struggle for love and justice across the cosmos.