Tori no Uta

Many years ago, a boy found himself outside in the rain without shelter. Wandering into a part of the neighborhood he had never been to before, he was invited inside a house by a beautiful girl who captured his heart immediately. Once the rain had passed the boy left, promising to return someday; but he could never again find her and she quickly faded from his mind. Now the boy is an old man, and returns to his home town for the first time in decades. Much to his surprise, near an old factory, the girl of his dreams appears once more...