A cute lil' slice-of-life gore manga! Great leisure read, well-crafted but light enough to be enjoyed at your pace.
The story follows the supernatural and violent (and sometimes just violent) accidents of the two main characters and the other hodgepodge side characters of the supernatural club. It is very, very slice of life because the story is a cycle of: nasty stuff happens, our protagonists narrowly escape, and then we accept it, forget it, and move on to the next chapter.
The reasons why I rate this so highly are because one, the story is very clean, two, the protagonists are well-developed and, three, the art
works well with the story format.
By the first point, I mean that the narrative flow is never broken and usually smooth (think of it as the difference between reading a book and reading a light novel, not a malicious judgement in any way.) The author cares a lot about composition, and it makes it easy to read!
The second point is why I find fault with comparisons between this and Junjo Ito's work: they stand on different bases. The protagonists in his story are heavily overshadowed by the story's horror elements; heck, you could swap in new protagonists in every chapter of Spiral and I probably wouldn't even notice. This is because Mr. Ito writes horror by emphasizing, deconstructing, and analyzing a theme. However, this work is heavily defined by the protagonists, such that you wouldn't have a story without them. That's because this author wants to make you feel like you're the one becoming a monster, and in turn, actually desensitizes you to a lot of the fear. So it's actually not a scary story, just a disgusting one. Also, I really like the main character dude 'cause he's so blasé.
The third point just has to do with the story being unique. The art's cute but the shading and sparse lines make it look creepy and gothic. It's interesting, I like it.
Read it if you like Detective Conan but with more death and less mind-bending explanations.