Let's hope you never decide to play HHS+ then. Though there is sex, you have to make an effort for it.
It's not necessarily a problem, its just a matter of expectations. One of my all time favorite games is Kamidori Alchemy meister, it's just such a good game, but I played it for a week before I got to any sex scenes. Also liked news desk, perhaps not as extreme but you have to play it for a good couple hours to get a proper feel for the game and how to progress before you get to the porn parts (but once you do they just keep on coming). There are also some good dating sims where the pursuit is the core gameplay, sometimes that's enjoyable, often it's not...
There are games you play for the porn, and games you play for the plot, and there are games you play for the gameplay. This type of game, to me, is the first category. I'm always prepared to be surprised by a good plot in a porn game, but I never expect it, I never fire up a porn game for the first time thinking "it's quality reading time!" I have other sources for that (quality writing is so rare these days tho). I could easily name some though, like Sagara Family, great game, great plot, great porn.
But ultimately, this here is a visual novel, if I want to play a visual novel for a good plot, the last place I'd ever look for it is in the smut game pile. And as a visual novel... There isn't anything else but the plot that it could have going for it besides the porn. That's not to say it can't have good plot, but the expectation is that it won't; and the only way to make up for that, as a porn game, is to make the porn parts frequent enough to keep my interest.