big wolf and little wolf

There is a tree on the hillside. The big wolf has lived alone under the tree for a long time.
Until one day, the little wolf came from a very far away place, so far away! At first the big wolf only saw a small dot.
Now, there are two figures under the tree: the big wolf and the little wolf. They are not friends yet, and they don't speak to each other. They only occasionally glance at each other from the corner of their eyes.
This afternoon, the big wolf went for a walk. It passed through large wheat fields and entered the woods. Before dark, the big wolf returned to the hillside, but found that there was no little wolf under the tree.
It was empty there, just like every dusk the wolf spent alone in the past...