Says 39 chaps on MAL, but probably just authors note or something.
Does have a sequel though apparently.
I thought it was pretty rushed, probably had a set number of chapters, but the premise itself was pretty good, and the characters although not having enough time to shine still did have unique personalities borne from the stereotypes they parodied. The twist was also pretty fun to read. All in all, not exactly a top ten favourite, but I do have a fondness for it. I'd totally read anything else the author and artist makes, this definitely should've been longer.
Karasu ni Hitoe wa Niawanai