After Shuicheng Shiranui retired to the countryside, the snow wind naturally occurred in the rural hut. Because it is shown in the background introduction of the adventure game "Action Taimanin" that Shiranui is known to be as powerful as the strongest Taimanin. He was tired of the life of killing. After discovering that he was pregnant, he chose to retreat to the countryside. Snow wind was born naturally in the middle.