At the ball, the Prince appeared to greet the Princess at the staircase in disguise wearing a tuxedo and mask. Guards saw him and tried to chase him away. One day, not long before a planned attack on the Moon Kingdom was about to take place, Endymion visited the Moon Kingdom to warn Princess Serenity. In the anime, Prince Endymion would sometimes visit the Moon Kingdom to see Princess Serenity. In the present day, Princess Serenity awakened after Mamoru Chiba sacrificed himself to save her from a deadly attack. When Queen Beryl killed Endymion in front of the Princess' eyes during her invasion of the Silver Millennium, Serenity took her own life with his sword. This Serenity was shown in flashbacks to be almost as childish and enthusiastic as her reincarnated self. However, the Princess would often travel to Earth to be in Endymion's arms. In the manga, contact between the two kingdoms was permanently forbidden for unknown reasons. She was the crown princess of the Silver Millennium, but she showed little interest in her royal duties as she was infatuated with Prince Endymion of the Earth Kingdom. She was the previous incarnation of Usagi Tsukino, as was revealed part-way through the storyline of the first season. Princess Serenity was the real name of the Moon Princess.

Sailor moon serenity symbol