Namiroji's works have some inexplicable, transcendent qualities to them. The artwork, while quite decent, is nowhere near the technical merits of, say, Ohigetan (or nisemididoronokai and Masamune Shirow for non-scat artists) but it's the way the story conveys emotion that sets Namiroji to the top tier artists. It probably has much to do about the fact scat isn't portrayed as humiliation and degradation, but as a sign of mutual affection. That's quite rare.