I barely ever comment but yk what, this series is actually perfect for that time you are just low and need a loooong pick me up. It's morbid half the time, in a fun way, makes you feel okay but gets somewhere where all the darkness actually gives hope. So that's awesome.
But for the storyline and all, it's actually quite good. Slow beginning but bareable, then things get interesting and everything goes wrong beautifully. I say that because when it starts, you will wonder about the intensity of the climax. Don't worry, it's worth it.