There can never be enough Kirino/Kuroneko group-sex doujins in this world. Enjoy!
@HNTI: Haha, I just kind of look at the covers and previews, then use a shotgun approach by buying a ton at one time to save on shipping. Then I try to scan the ones that I think are the best first.
@captcarisma: You have good taste to picking books with group fun, not sacrificing quality of it. In other words, not every 3some in doujinshi looks fappable.