In the fifth and final season of the Bishoujo Senshi Sailormoon series, Sailor Stars, several new characters were introduced. In addition to Sailor Galaxia and her henchmen, Chibi Chibi, and the Fireball Princess, the Three Lights made their appearance. The Three Lights are a super popular idol group. It's members, Seiya Kou, Taiki Kou, and Yaten Kou (Kou is their first name, they are not brothers.) are loved by millions. Rei, Makoto, Minako, and even Ami are members of their fan club, so imagine their suprise when they transferred to Juuban hgh School. Usagi is the only one who seems to be indifferent about the group, but Seiya takes a liking to her anyway. ^_^

        

The Three Lights have a hidden agenda. They are actually aliens from another star system, who have come to Earth in search of their princess. These aren't your normal aliens though, they're actually the Sailor Starlights, the Guardians of Fireball Princess, Sailor Starmaker, Sailor Starfighter, and Sailor Starhealer.