Each chapter is captivating and well planned. My god, before I read this I did not believe I could get jump scared by turning a page, but hell, I was proven wrong.
Its one of those rare stories that don't add fillers and fanservice so that it puts all effort onto maximizing its potential. It also introduces concepts and characters at a rate that doesn't make you want to pull out your hair. *ahem* snk.

Story: Not a single chapter has bored me so far, and that's extremely rare. Most stories usually require some more boring and relaxing chapters to make sure the suspense and action doesn't get boring. And that's completely fine, understandable. Yet somehow, this manages to remain suspenseful every chapter without fail and without breaks. Just a never ending roller coaster.

Art: There's lots detail put in the background, and especially, the expressions, its amazing. There's a great tension between the deceptively cute children and morbid situation. The artstyle really helps bring that idea out. On a side note, some of the colored covers later on are absolutely beautiful.

Character: Now here comes my one beef. Every single character, is so rich, amazing, and honestly human. All except one. Emma. Emma is your typical overly positive protagonist that somehow still gets lucky enough to get what she wants. There just isn't a lot of depth in her unfortunately and she's the main deal. Luckily, the other characters more than make up for it. What I really appreciate about the way the author writes most of their characters is how human they are. Selfishness, survival instincts and bravery are weaved into each character so well, much better than how in most stories, all the friends of the protagonists aren't perfect cookie cutter idealists.

Enjoyment: really ties in with how the story is paced, every chapter is done well. And the concept itself is provocative. The amazing part is, that despite how much ideas there are in the story, you don't get confused, because it presents itself with such clarity.

I 100% recommend the story, its the first time in a long time that I charged through a manga from start to end, non stop.