This was a very good series. I have read the reviews and they talk of this directors part directing so they had that to reference I do not. This is the first I've seen if this director. It's an odd series, but odd is kinda normal when watching certain Japanese content. I have watched enough anime, Japanese films and series as well as video games to come to expect a very different sensibility that rarely is found in America. This is not much different...at least partially. There are 5 episodes. A murder occurs and four girls are tied to it and then you have the mother of the one murdered. The first 4 episodes deal with the fire girls who played a part, sorta played a part, and then the 5th episode deals with the mother. I am not going to divulge much in the plot. That's for you to watch, all I'll say or try to do is set expectations a tiny tiny bit and share very briefly my take on the overall series - quite simply. Firstly the 1st episode is very odd in tone and direction from the last 4 episodes to me. It starts very eerily and gives the impression you are about to watch a more horror toned series, but from the second episode on it, to me, really charges direction, feel and tone. The first episode is very good and creepy to say the least. Perhaps on it's own it would have been amazing, but out into the entire series, it doesn't exactly fit in my humble opinion. Does that detract and ruin anything, not really. Especially if you let go it's oddness and let yourself move on. There are plenty of oddities to all the episodes, but the first one was ABSOLUTELY the oldest for me. Drama series like this almost always have over the top moments or plot points and that happens here a bit too, but I was fine with everything and just went with it.
As I have said, I am not trying to give too much away. I am sitting vaguely on purpose, you need to watch and enjoy. I really enjoyed this series. I was quite engrossed and finished it easily within a day.