Ummm ... that is a side story that the author uses to get out his pent up ecchi. There are TWO versions of the story written/drawn by the same guy. I can't remember if it's canon or just an alternate universe. In this one, they haven't crossed the line ... yet. I think I remember reading something somewhere about how the author (being a hentai artist) created that H version to be separate and apart from this version. And that in this version he tries to NOT have them cross the line to keep it a bit more pure. TLDR? No sex will happen in THIS version. We get plenty enough in the H version.Yuu-kun, why are you worried about her peeking at you in the bath, you've spent literally days at a time fucking her.
It's the other way around. She made the hentai series first, then turned that into a normal manga.the author (being a hentai artist) created that H version to be separate and apart from this version