This series is a low key romance-comedy with some very mild horror elements. Like most romance manga pitched at the shounen demographic, the heroine is very forward, and the hero very… backward (sigh).
The storyline is pretty good, repeatedly reinterpreting the legend of Yuuko and who Yuuko really is – I really like series that can focus on a single concept and develop it well. (As always in these Japanese horror stories it comes back to child sacrifice!) The ending to the story was nice too.
Ultimately, Tasogare Otome x Amnesia is a pleasant shounen romance with some picturesque scenes and the occasional creepy image. I have to say, Yuuko makes the Noh fan dance look amazing.