Many things make this work: the darkness in the tunnel, the passing train on the other side, the kanji script above her, the incredibly strong diagonal of the platform. Most of all, what we focus upon: the spotless trench coat, her large bag, the dark hose and her heels. She is someone we cannot know, but we know she is pretty and takes pains to be thought so. In short, we are presented with a puzzle, quite like Sherlock Holmes, we might or might not solve. Absolutely brilliant work here. The viewer has room to insert so many things. Voted, of course.
