Yuki no Kuni is a country which was covered by eternal ices. It was a small country, but they had lived peacefully thank to a kind Daimyo, Kazahana Sousetsu. However, 10 years ago, a tragedy occurred. Kazahana Doto who was the little brother of Sosetsu revolted against Sousetsu, and took over the country.
At the moment he passed away, he gave Rokaku Suisho (hexagonal crystal) which consisted of snow crystals to his only daughter Koyuki. She was at a loss when she saw his father\'s death. It was Kakashi in his youth that appeared there. He was there to fulfill some order.