Ultraman Saya: Ultraman Zero’s younger sister. When Ultraman Gaia’s parents both died on a mission, Ultraseven adopted the young Ultraman Gaia as his daughter and renamed her Ultraman Saya.
Ultraman Saya’s best friend, Ultraman North, fell into darkness. In an attempt to bring her back to the Land of Light, Saya chased her all the way to Earth. Unexpectedly, the two fought, and Saya was seriously wounded before falling to Earth, where she met Ning Xue and gave her the power of her light. Ultraman North also came to Earth and possessed Ning Xue’s best friend, Mona. Thus begins the story of two Ultramen locked in a love-hate relationship.
Later, Ning Xue discovers she has the power to travel through time and space, allowing her to move freely around the universe and even visit the past and future. After completing her mission on Earth, she sets off on new adventures in other Ultraman worlds.
