Naruto the Movie: Ninja Clash from the Land of Snow

Koyuki has long, straight, jet-black hair, light blue eyes, and a hexagonal crystal necklace that she never takes off. She usually wears elegant actress clothing, but carries a sad and distant aura. The story begins when Team 7 is assigned the mission to protect her — the famous actress Yukie Fujikaze — during filming in the Land of Snow. But she runs away and says she hates that place: in reality, she is the true princess Koyuki Kazahana, who fled when her uncle Dotou killed her father and stole the throne. Dotou sends ice-armored ninjas to capture her to get the necklace, which he believes to be a treasure. But the necklace is a device created by her father: capable of transforming the eternally frozen country into a place of spring. In the final confrontation, Naruto faces Dotou and uses a special seven-colored Rasengan, defeating the villain and activating the device. The ice melts, the sun appears, and Koyuki finally smiles, taking her place as ruler and thanking Team 7 deeply.
But don't worry, everything will happen just like in the actual movie.