Maybe it's just me, but I find this image extremely lewd.
It's, well, the face.
The face is one of the most erotic features on a woman. The face is what expresses "sexy" and sexy emotions, as opposed to just looking hot but disinterested like this.
When drawing, it's absolutely the most important thing when making distinguished H, short of being explicit itself. And this artist drew her face like a hentai girl.
So it's normal. Don't underestimate the power of good "fuck me" eyes.