Crystal Tokyo is Tokyo of the future. After Tokyo was put under an evil spell, Princess Serena and Prince Darien rose to the throne as Neo Queen Serenity and King Endymion and broke the spell. From here, Tokyo became Crystal Tokyo, ruled by Serena and Darien, inside Crystal Palace. The Negamoon Family attacked Crystal Tokyo, putting all its inhabitants to sleep. After Wiseman and his Dark Crystal were destroyed, Crystal Tokyo was returned to normal.