Princess Kakyuu

Kakyuu has long red-orange hair and dons a long deep red dress with blue in the bodice and puffy sleeves. She has a black crown and a blue ribbon around her neck that resembles a flower. She is the ruler and future queen of the distant planet Kinmoku, and fled to Earth moments after her homeworld was destroyed, to find the Light of Hope that can defeat Galaxia. Fearing Galaxia, she hides in an incense burner, found and protected by Chibi Chibi. The Three Lights play their music to reach her, but to no avail, as she is doing her very best to remain hidden from Galaxia. Many times, her mystical scent of pure goodness and light was detected by the Three Lights whenever Chibi Chibi (who was in possession of her holy incense burner) was near them.

When Sailor Tin Nyanko releases a black hole and Usagi gets sucked into it, Chibi Chibi uses her incense burner to destroy it and Kakyuu finally appears, holding Usagi. She apologizes to the Starlights for not revealing herself sooner, even though she heard their songs to her. She tells the Super Sailor Senshi about the legendary and strongest Sailor Soldier and that she is now searching for the Light of Hope, and requests Usagi to help her.

However, Galaxia appears during a Three Lights' concert, engulfing the world in darkness and kills Kakyuu. Before she dies, she recognizes Chibi Chibi as the Light of Hope. Following the true Galaxia's healing, she reappears as her Star Seed is returned, and returns home to rebuild planet Kinmoku along with the Starlights. The only powers she demonstrated was to create an invisible shield to protect herself (and others) from Galaxia's attacks, which the possessed Sailor Guardian soon managed to penetrate with ease and remove a blackhole completely to save Sailor Moon and return her Star Seed.

The Sailor Starlights said Princess Kakyuu possesses the same strong healing ability Eternal Sailor Moon has to return Phage to their true forms, but this was never shown. Princess Kakyuu's Starlights are, Seiya (Sailor Star Fighter), Yaten (Sailor Star Healer), and Taiki (Sailor Star Maker).