How do you date a girl?

One year after Gyeon-woo visits the tree, the Girl finally comes. Sitting under the tree is an old man. Throughout their conversation, the old man is very interested in finding out why the Girl was one year late.(1) After the old man tells the Girl the touching story how the tree was struck down by lightening only to have another tree planted in its place by a young man who said there was someone who would be very sad to find that the tree had been destroyed, the old man disappears and the Girl looks at the sky to see a tiny UFO flying across the sky and then vanishing.(2)