I almost dropped this on the first episode. Thought I was waching one kind of show and then it abruptly become something completly different without much explination. Thats no bad if you do it right, but this were not the case. The stupid characters (Only Sasami seems fine), the crazy random events and the incest jokes doesn't helped either. But I rarely judge by one episode, so I continued watching and soon found it somehow pretty enjoyable. The show manages to be always cleverly surprising and keeps improving on each episode. And even when there is not a propper plot underneath, there is a lotof mistery and touchy moments and I was always looking fordward to know what happens next. Characters don't get much better though. They just don't have enought screen-time to develop themself, even when all of them have a rich back-story. Still, the show is pretty good overall. If you have no problem with no-linear story-telling, give it a chance and don't get fooled by the firsts episodes.

On more thing, I think the show was tagged wrong: 'dementia' its probably a more proper label. Also, don't expect any romance.