The art is lovely and sort of reminds me of Tsukuba Sakura's, and the story was interesting (there's probably enough here for at least a full volume). The only thing I didn't like was Sue, the main character. Her character growth was the central aspect of this oneshot, but I found her clingy attitude and initial violent prejudice against the green-eyed "devil" rather irritating. "Bernadette" was far more interesting, and I wish we got to find out more about him. Despite how important his role was, we never even find out his name. I suppose that's part of the mystery?