I am looking for an old Japanese UFO film in which a little girl named KAYO comes to Earth in a UFO which looked like a golden egg. Then a family takes her to their home and she grows up with them. One day the aliens come to Earth and take her back to space and ...
"Princess From The Moon" (1987)
One day wood cutter Taketori-no-Miyatsuko (Toshiro Mifune) discovers a baby girl while he's out in the forest visiting his daughter's grave. Not wanting to leave the infant to die and because of her resemblance to his dead daughter, he takes the child home with him- only to discover that the child grows at an extraordinarily fast rate. Incredibly beautiful, the now grown child Kaya (Yasuko Sawaguchi) attracts the attention of everyone around her, including the land's Emperor. Unwilling to accept their advances, Kaya gives the men a list of increasingly difficult tasks. By the film's end Kaya returns to outer-space by way of a space ship.