It's one of the most unique anime. It starts with slow paced until 11th episode but it won't get bored at any second. It gets little darker and darker after 6th episode. In the 12th episode, the slow pace makes your heart beat so fast. At last 10 minutes it turns into most disturbing and horrifying anime. I dont know why people hate the ending but for me it's a great ending. Anybody would have done that thing at the end.
( it's not for weak hearted people).
Plot : 10/10
The ending may scary you....,