As the developer who did the artwork here, let me be the first to say it's traced, but they have NOT been traced from Eva's work. Like Eva and many other devs here, I did trace images from Real Porn, some fully, some partially, to get the pose. Faces have been changed for the most part except for one model (Left that as an easter egg). If you read the stories, there are none like any other devs' work. The art style is western, and I would like to add it doesn't belong to one author or the other. I respect Eva heaps, so if it does remind you of GGGB not going to lie; I am flattered as I am still learning to draw on Krita. So Happy New Year, and I hope this explanation settles things on the whole tracing front.
Edit - Forgot to address the NTR, it is only in one story, and that's "Charlotte's." Avoid Amber, Charlotte(Explicit NTR), and Olivia if you don't like cheating themes.