行男(ゆきお)は駒子の(こまこの)元婚約者(もとこんやくしゃ)であり、葉子(ようこ)とも深い(ふかく)絆(きずな)があった

As the cold winter in the hot spring town progresses, the complex past of Yoko, whom he met on the train, and Yukio, whom she was nursing, is revealed. In fact, Yukio was Komako's former fiancé, and was also bound to Yoko with a deep bond. Through Yukio's death, the loneliness and sorrow of the three deepen further in the desolate landscape of the snow country.