This anime is classified in the 'horror', 'mystery', 'supernatural', and 'romance' genre, but it is disappointingly lacking in the first three. This is because the main story is pushed aside and hardly mentioned in the first three-quarters of the anime, and instead we are regaled with boobs, upskirts, boobs, sexual innuendos, boobs, pointless flirtations, boobs, jealousy... oh and did I mention the boobs? I mean like, seriously?! Ok, at this point I do expect to see some fan service in any anime, BUT I did not expect a show touted as dark horror to waste so much time on all this harem crap.

That being said, and keeping in mind that I have not read the manga, there are many things which are unclear since the anime seems to be disjointed and apparently leaves out a lot of important things which were present in the source material. For example, the first episode starts when a new member of the Paranormal Investigation Club is looking at her notebook in which she has noted down 7 different 'secrets' related to paranormal issues, which are plaguing the school. In the manga apparently, these 'secrets' or 'cases' are all tackled and solved throughout the story, leading us to the realization that they all, in some way or other, have to do with Yuuko - the Dusk Maiden - the ghost with Amnesia who is the main and title character of the story. In the anime however, these 7 'secrets' are only mentioned once or twice and although we start by tackling the first two, they are never explained or mentioned in any structured way, and are later forgotten amidst... you guessed it... the fan service. (BOOBS)

Another point which rankled is that during most of the episodes, the school is totally deserted. Apart from our 3 main characters (and the ghost of course). I mean, ok sometimes it is mentioned that they are there during the holidays or the weekend, and we do see them play basketball a couple of times - but what about the other students? Are they never around? What about attending classes? The students in the classrooms? What about teachers? Don't the three 'club members' have any interactions with anyone apart from amongst themselves (and the ghost)?? Even during lunch break, we never see them talk with anyone else, and the few times other students finally appear, they are literally faceless.

Also what about Teiichi's life outside of school? He's the main (living) character and yet we know nothing about him, and nor do his two living friends and one dead one. All three girls say they are in love with him, but we are never shown any interaction outside of school, or whether they actually know anything about his family, his hobbies, etc. Outside the Paranormal Investigations Club, apparently, nothing exists. We know nothing about the characters themselves or their private lives - which is one of the main reasons why they are so wooden and two-dimensional. I get that the focus is on Yuuko, but seriously, if this is a 'romance' how can the relationship between the characters be anything other than shallow, if the characters themselves lack any kind of actual personality or individuality?

In a nutshell - this anime could have been awesome. It had real potential and I loved the way Yuuko was portrayed and her psychological turmoil HOWEVER all of this was lost, and all we are given are shallow characters and a meandering pointless story punctuated, SOMETIMES, with some tantalizing dark content, which, however, is never fully realized.