Only the Shadow of the World

Ten years ago, she saved him in the snow. Her tenderness melted his frozen heart. He said to her: "Sister, if I marry you, will you be my wife?" His childish words made her smile sweetly, "Does Xuan'er know what a lady is?" "The lady is the one she likes." "I like my sister and I want to be with my sister forever." He had never had any desire before, but at this moment, the desire to be with her suddenly jumped out, extremely strong. Those sincere and longing eyes made her heart throb inexplicably, "Xuan'er..." After a long time, she smiled, and the smile was pleasant, "Okay, sister will be Xuan'er's wife. But, she has to wait until Xuan'er grows up." "Why do you have to wait for Xuan'er to grow up?" "Because Xuan'er is still young." "..." He tilted his head and thought seriously for a while, then said seriously: "Sister, I understand." Ten years later, when we met again, there was already a distance that separated them as close as the ends of the earth... Just shadowing the end of the world, where can I go home? After thousands of years of floating clouds, I can only recall your face!