The Art is only good because he ripped it off japanese hentai games that is the reason why his newer games are worse in art and this one is great. He does this for all the games with style of art he made He Does it for every game i can't tell you which ones he ripped it off but i guarantee you all of his games made in this style are ripped off something.
You know what's funny? That guitar theme that loops, that's "change the world" by Eric Clapton.
This is actually from a hentai called Resort Boin and these girls come in at episode 2
The sex scenes here were pretty hot, especially the three ones with Chelsea. Great job!