I thought to leave a review since I've seen only one so far. I have read 6 volumes so far and have mixed opinion on the manga.
Pros: shattered storyline works well - short stories entangling each other and gradually connecting to main plot which is about curse, atmosphere is dark and tense sometimes, art is done nicely.
Cons: too many short stories go like this - a character thinks something is watching him, shrugs it off and it ends with a shadow smiling, even if plot progresses the shadow moves to new place and same thing happens again; many creatures which are supposed to be
scary are hilarious, main plot is progressing at too slow pace that numerous short stories are ruining the enjoyment.
If you binge read/watch horror the manga is still worthy a try to see if it fits your taste or not. Even though some parts are alright, I felt most of things became too repetitive that I got bored.