The manga started out good, there were nice characters, they had development, though it was a bit all over the place. The plot seemed nice too, nice and cool supernatural stuff. Then near the end, like the fifth volume or the second half of the fifth volume, it all went to hell. So much to hell, that because of the shock of it I can't even describe much of what happened before that. It was the most confusing ending I have ever read, seriously, other endings have confused me, but they were clearly open endings. On the other hand, this ending was full of mixed signals, to start, it was too short and rushed. Also, it felt like the mangaka wasn't sure if the manga was getting axed after this chapter so she just made the most ambigous and misleading statements she could come up with in case she had to continue the series.
Fisrt of all, who was the father? I think it was Mika because the children looked like him and because his relationship to Takamichi seemed more intimate than with Seijuro, and if you notice, in the last chapter, Mika is wearing a ring on his finger (it's kind of highlighted with some glowing around his hand in a close up), I don't know if that means anything, cause well, it wasn't on his ring finger, but it's there at least. So Tatsuyuki was alive? seems so? First he was dead, then not, then again, and then not..... and all of this without one single explanation. The dogs were actually Night and Snow? At the beggining I thought they were some other dogs, becuase of the other characters' innuendos and how they were refered to as "those dogs" as if there were other dogs, a.k.a. the real Night and Snow, but then they transformed to save her babies, so I just don't know anymore. And as per usual in this volume, it's never explained! yay!! (NOT).
So to sum it up, it started out good, totally recommendable, and when you reach the last half of the las volume, be prepared for total confusion. I guess if you go prepared and know not much will make sense, you won't be too dissapointed :S. It was good, quiet good, and then it all went to hell.
EDIT: Maybe some things were lost in translations? Not that it would have fixed everything, but some would have been a bit clearer? Who knows.