Just finished the tankobon, and overall it was...ok pretty much?
There are 2 couples it focuses on, and you do get to see them get closer.
The ending is, well, pretty rushed and confusing. Things got pretty jumpy in the last few chapters, where you thought some of the story and/or pages were possibly missing.
The art was consistent and seemed well done to me. I wanted see how it progressed and the end after reading the first chapter here.
I liked the story line fine, mostly character/couple development with action and light horror as the background, but overall it just read a bit thin.