So, this story is about 2 boys describing a school idol's sex life while (unbeknownst to them) she is having sex, right? I am 80% positive that is what this is, but hentai can go weird places.
Yes, it appears that way. It took me two readings to get it. The juxtaposition between what those boys think their "pure" idol is like, and what the actual human being that is the actual idol herself is so tasty, this goes straight into my "Hentai as social satire" folder.
This story has a cool idea, but it just doesn't really come together. The two guy's discussion is so removed from the rest of the story that they might as well be different stories. The girl feels like a side character, and her boyfriend is so non-existent that the author didn't even need to draw his face.
I actually really appreciate it when an author publishes subpar work. It happens for every creator in that they have this great vision that just doesn't come out right. Finishing a work in spite of that is a sign of professionalism that I appreciate. We get to enjoy something now, and the author can move on to something that will be better.
Can't ask for much else.