Children is a rough around the edges attempt at murder-based shock value. While the initial premise of the main character being sent to a daycare only to find that its actually a slaughterhouse is interesting, that intrigue only lasts for a couple of chapters resulting in a very soulless read for the most part. While there is a twist at the midpoint of the manga, the transformation of the main character is far too drastic which kills any immersion in the story. From there, Children finishes off with more shock and murder tied up in a fairly clean ending.

While this manga is a very quick read (approx. 30mins), I can't say that it's worth it unless you enjoy casual murder stories where the insanity of the characters is on full display and don't require decent story or characters. Either that or you have half an hour to spare and your standards aren't too high, then this is a passable way to kill that time.

Story: The story has some nuance to it which stops the manga from being a waste of time and there is enough mystery to give you a good enough reason to keep reading.
Art: The art of this manga won't be for everyone, as it's of a more unique style than you would usually see. That being said, the art is still good and suits the content of the manga very well.
Character: The characters in this are not good. While they are actually quite nuanced and have some decent character dynamics, the way the characters are written, with shock-value first and story consideration second, makes it difficult to care too much. There is also the issue of simply not having much time with the characters so the huge shift midway through just doesn't work well.

TLDR: Mediocre murder manga that's good for killing half an hour, just don't go into it expecting too much.