This doujin starts off where the manga ends, with the defeated Enishi sitting in that that run down town when he sees his supposedly dead sister. After the shock wears off he drags her off to a secluded spot in the forest and starts groping her roughly until he gets low enough to decide to give some lip service. He does this till she cums and has a flashback of sort and being the sister complex guy that he is, probably thinks that he will never let her go.
I enjoyed the story very much. It flows with the original story well and shows Enishi's obsession with his sister. It was also nice to see a rape story that didn't turn into some giant gang bang or never ending torrent of semen or something excessive like that.
The art as usual was pretty good and on spot with the original art as i expect from this circle.
Overall very nice, although if you are looking for sex, this only has what was mentioned, but good for those who want a little story with their fun.