This might be the wrong forum for this buddy, but you might have a look at /vg/ in 4chan, they have a lot of daily topics in regular non vn porn games and also Hongfire(forums), Fenoxo(forums), Hentai Games General /hgg/, also 4chan. I do not condone this type of "Art" but nobody answered your question, so I figured I would take a stab at it.
Some adult content like the dating sim “Crush Crush,” proved to be a hit on the gaming portal, so there seems to be a market for this. ^hmmmmm^
I would not waste my time with this, and rather concentrate on things with a much bigger market and better returns.
