I had the same reaction when I read that "cum throne room", I had thought that it was a mistake or something but then saw that it was even in italics like it was begging for attention. As for h-scenes I have only read the first and it amazingly hilarious(first the way Kurou's dick is drawn and secondly what happens when you choose to "hold it in"). And as you said the blend of action, comedy and emotional scenes is pretty well done.
Well now that I think about it how many chapters does Demonbane have ?