I haven't played either of those in a long time, but I mean... as of when I last played them... Sileo certainly has some plot threads that are largely about sexual encounters, but not in a pornographic manner. Temptation's Ballad had exactly one mention of an actual sexual encounter by the time I stopped playing. Maybe it ramped up though, I have no idea.
So like... yeah, if you're including either of those with mere mentions of sexual activity as pornographic, I guess this is high on the scale? But I wouldn't consider either of them to be. Basically, our scales of what porn is seem to be sufficiently differently defined that something like Chord Progressions would be at the top of yours and the bottom of mine...