Fellatio Research Department

The main appeal of this series are the insanely detailed blowjobs. Anatomicaly perfect lips and tongues will create trails of rendered saliva as they slide through a penis. Blowjob scenes will go for dozens of pages, finding every possible camera angle to show a specific licking technique. And if the visuals aren't enough, most scenes are punctuated by the main character's inner monologues thoroughly describing every physical sensation he feels. If that was all it took for a good hentai it would have been a 10/10 series, but unfortunately there are many other aspects that don't keep such a high standard. For starters, all the girlshave pretty much the exact same body. When combined with the extreme focus on just one type of sex scene that leads to quite a lack of variety. It's still really impressive how many different ways the author managed to represent those blowjobs, but that'll only get you so far. In fact, it'd probably been better if the other sex scenes had been removed entirely, as they just feel like filler. Another problem with this type of hyper detailed realistic approach is a lack of emotional depth in the story. The first chapter starts fine with a main character whose desires are relateble and lead nicely to the main fantasy of this series (getting your dick sucked as a school assignment). From the second chapter onwards the author just keeps introducing new characters whose personalities could be fully explained in an elevator pitch. We don't get any glimpses of their internal worlds other than the fact that they really REALLY love sucking cock. Their relationships (either with the main character or with eachother) are never explored either. Just as an example, chapter 4 has an incest scene, but it never dives into the psychological aspects of the kink, instead going back to the raw physicality of penises and tongues rubbing against each other. Anyway, it's a pretty good doujin if you like blowjobs I guess.