The Snow Country Prince

Koichi and his sister Yuki form a bond with Hanaguro, a swan who traveled from Siberia to Japan. When Hanaguro is threatened by a dog, Koichi surprisingly flees, but that night, he has a vivid dream in which he finds himself in the Kingdom of Snow Prince, where he develops the courage to assist other swans, qualities he previously lacked in his waking life. This experience has a lasting impact on Koichi.