Lol wtf? No someone should not have to play through a demo to get an eyeful of content they do not enjoy. There is a very good reason DLSITE has tags such as NTR, Guro, scat, gay etc. The dev is trying to hide the fact NTR is in this game by not mentioning it anywhere in the description that is visible at a glance that way he can profit off of more people. And how about the people that bought this game before NTR was included like me? No where on the page did it indicate NTR was included, so to include it like that warrants a refund since I make it not a point to support NTR creators.
Listen you either make fetish content or you make vanilla content, there is no halfsies with this kind of stuff. If dev wants to get into fetish content like NTR then he can go ahead but he can't be shocked and annoyed when vanilla fans get annoyed especially when it blind sides them.