The part that bothers me about the story is how weirdly detached the MC is from the world he now exists in, even though he'd been there for well over a decade by the point the story starts.
In a world where him being a man means he'd have a front-row seat to the systemic sexism and classism that all men would suffer, he's just....insulated from it, I guess? Sure, he has Sestuna at his side, but the tone of his narration and the way he carries himself, you'd think he'd be much more beaten down by witnessing and enduring low-grade harassment all this time, and he's just unaffected and acting like none of it actually relates to him.
To say nothing of the trope being used wherein he treats none of these people like actual people and instead as characters on a page or screen. He continuously calls Hinata "my favorite", which is already a form of *objectification and "othering". He freaks out over being actually targeted by Rui with violence in their first meeting, wondering why she's going to such lengths to try and murder him--when he's a literal terrorist in her eyes, and someone she sees as coming into corrupt/steal Hinata from her.
After awhile he starts realizing that his mere existence and continuous interference in the lives of these people are "throwing off the story", but that's another problem--he keeps treating it as a story, and these people around him as flat & railroaded characters in a narrative, and like he's just some spectator.
And it would be one thing if he'd only been in this world for a few months, but it's been for years, now...and he's only just now seeming to wonder about how things are shifting from what he thinks they should, like there's a script that's supposed to be running the background.
It's a common problem with stories like this, and the MCs almost always try to hold onto the "but it's a story [and none of this is real]", and that's never the case. But it makes me want to root against the MC, if only because he's both fucking up the lives of others, while acting like he's blameless, and acting for selfish reasons while feeling absolved because he's "just a mob character wanting to indulge himself".
He's screwing with Setsuna's feelings, with Hinata's feelings, he's mucking up the dynamics between Hinata and Rui, and even other antagonistic figures like Gouki are getting involved in ways that are entirely the MC's fault. And he's just not taking ownership of this, and being almost willfully ignorant of what everyone around him is doing and feeling and saying.
I keep hoping that at some point he'll turn the corner, but 10 chapters is apparently not enough time for him to do so.
And that's all leaving aside the inherent problematic nature of the world & setting. There's so much potential in an exaggerated classist society based around one's sex, where you have an authoritarian governmental system & enforcement organization on one side and a ragtag group of resistance fighters/terrorists that aren't even unified in their goals and motivations on the other.
Instead, it's almost treated like window-dressing for the MC's antics and played into for comic relief--or very much not taken seriously, even though the MC should be aware of how important it is for the very people he's involved with. You'd think he'd be much more jaded, living as a second-class citizen for so long, and being on the side seeking to overturn the current regime in power.
But his fixation on the character of Hinata, and not even Hinata the person in front of him, seems to be the only thing that's really grounding the MC to this world, and it feels very superficial in light of the reality around him, which in turn makes his struggles as the ostensible protagonist that much less compelling.
That said - it does seem like he might be at the point where he's starting to shift that mindset, though, so maybe things will pick up from here. But I'd almost prefer that we be told it'd only been a couple months' worth of him being in this world, or that we go the "he only recently regained his memories after being reincarnated".
Because him being cognizant of his circumstances since childhood, effectively, whilst simultaneously being strangely insulated from the harsh reality that he should have been experiencing, ruins that suspension of disbelief.