Something I would like to say about the NSFW at least from my experience.
There are no explicit nudity sprites (the no clothe sprites have no genitals), and the sex scene with shin has no CGI, it's literally just a black screen with narration.
About the MC: There's also no sprite of the main character for some reason, human or not. Which is kinda fine but it would be nice to see how MC is even in just a scene. Also, in the original shin's route there's the kiss CGI that's an incredible moment, which is also lacking.
Actually the problem is that there's no CGI at all. When the characters are doing something different it's just said, not shown