I was generalizing to prove a point.
Im also generally talking about the H-scenes text specifically, there's an entire Arc about breaking Sera as she tries to resist you which ends up with her turning animalistic (this is where the race based humiliation kicks in, it's kinda sad but super hot).
Also i don't know how reading the Dialogue has you not thinking Mars is trying to enforce his superiority over the other characters as someone from a Demon race not a BBC/dark skin human (really from a human perspective reading the story and seeing all the anti-demon women and males he dominates including NPCs is quite jarring).
Im not saying it's a bad thing, quite the contrary thats why i love this game, specifically because of it's super dark corruption themes.
Alot of He's playing a caricature of himself or slipping into old habits. Mar's doesn't believe any race is superior and while the story has corruption elements by playing on certain fetishes, Mar's personally doesn't believe in such things. His actions do tend to go against what he really wants, but that's also kinda the tragedy of his character. When he fucked that one warrior lady in front of her little sister it was less to prove that demon's are superior but more to destroy her worldview because it was self-destructive. But once her view collapse, she decided to cling to Mar even after he told her to choose her own path. She didn't follow mars because demons were superior, she followed mar because he was mars(And had the power of a hero, so she couldn't really beat him)
I focus entirely on the characters, the demon race hasn't done shit to nail any impression of superiority.
I might not be getting where you are going, but what I take from the game is that the whole inferior-superior thing between humans and demons doesn't matter. None of them is inherently better than the other. Everyone is just pawns in the goddess games, and the only way to win is to play your own game. You can't beat the gods, but you also don't have to be their slave. Mars has seen the good and the bad of what the world has to offer, both from humans and demons. He gained wisdom from that, but he is a flawed man who has the cards stacked against him. Same for Erin, dude was a rabbit being set to wed a wolf.
I like the game because Mar's isn't some sterotypical bull, and Erin isn't a sterotypical cuck. Their actions and personalities were things predetermined by the world around them. They are actual characters instead of caricatures. Mars and Erin are like two extremes of one another. Mars was raised with cruelty, abuse, and rape from his stepmother. He didn't really get to have a childhood or happy life. He was practically born in the muck. Erin was born with a hyper-loving and coddling mother who spoiled him. He spent a great deal of his life surrounded by people who loved and babied him. He didn't have to work on anything or be confronted with his flaws/harsh realities of the world. The goddess changed her entire script because she to be entertained and felt the original priest(Aith) was too boring. The game is just good because it find myself thinking more about the world and the actions of the characters than I do the porn.
I'd normally never touch any game with ntr because I simply find the fetish not to my taste. I originally only downloaded this game just out of curiosity and was sure it would some slop that I would delete after playing for an hour or so, only to be surprised by the story.