None of these really distinguish somehow from the stock narrative. These commonly start nice and gentle and then only ramp up as they go. The sissy narrative is introduced gradually, much like in this very game for this matter, where you have Onori just about starting the angle how MC is actually more of a girl than she is, mocking his lack of masculinity, small penis and failure to perform sexually.
I think you make a mistake in your argument regarding my stance -- i'm not saying that the typical player is going to expect specifically cruel femdom and humiliation and that the game must have these or it will disappoint them. What i am saying is that they are likely to expect some sort of femdom, sissification and submissive behavior from MC, based on the game's tag. As opposed to, as some seem to expect here, that the MC will "grow to stand up for himself" and somehow get on equal (if not plain dominant) footing with the girls.
If you can think of any that actually take a gentle approach and get more cruel as they go I'd be curious to see them; that sounds like an actual bait and switch.
What I've seen way more often follows this pattern:
-Small, wimpy guy is publicly shamed in some early event to establish his lack of manhood.
-Someone, usually a domineering woman, is given some kind of power over him.
-She starts demanding little acts of submission to her will.
-Once he's fully emasculated she demands total submission.
-All the following scenes are about how pathetic he is for accepting this state.
The logic behind it is there to see. A guy becomes a sissy when he accepts his total emasculation, and if there's a futa involved she completes it by fucking his butt. The expectations are what they are because the messaging behind the sissy narrative is that they can't be taken seriously as men. It's not that I don't think you're right about people's expectations, it's that this game so clearly and immediately doesn't accept that premise.
The Onori scene where she and Riko see each other naked is the perfect example. She's competitive, so she wants to compare, and in the context of wanting a W because she was forced to admit that he had a better butt she gloats about how her penis is bigger, but in the same breath she praises his, too. Him being girly isn't a disqualification of his manhood in her eyes even if she does find it strange/novel; the writing distinguishes itself from a sissy narrative by having a scene like this and then -not- using it as a chance to tear him down.
If it happened once or twice you might think it was a touch of weird writing, but it's consistent about this because this game's logic is that a guy with girly looks and low confidence can gain self-esteem from his relationships with his futanari cousins. Because it lacks that needless hostility toward girly-looking guys, it can explore the idea from the perspective of what the characters are actually interested in. In actively strengthening him we can have cute scenes about Riko grappling with thoughts of being attracted to his cousins - their male parts too - and wondering how to approach this.
That will make him slowly warming up to their dicks so much hotter. It's his choice and a result of his growth, not a result of breaking him.