2 stars for the plot twist of a horrible incest ending, but definitely don't want re-read. Just like one of the comments said, it's definitley a more fucked up ending than the bad ending version of "Goblin Cave Anime".
I did live the creativity/rareness of having cow animal characteristic story, rather than the usual ones.
Koumei na Kishi Danchou ga Jitsu wa Nyuugyuu datta Ken