Ahh yes, 5 months since my last comment and the drama's still going strong I see.
Just try not to make Chika's story "tragic for the sake of being tragic" please, I mean her backstory is kinda laid bare already so there isn't much else to add to it. Asshole father, bullied constantly, mother died and she is blamed for it, plus I guess it IS implied that she's a prostitute and it's never directly shown. Though she does mention it herself... And she IS seen exiting a love hotel with another man, but surely that's nothing right?
I'm also still curious how this whole situation will end and I still think it was a ballsy move to begin with. I mean, surely you must've known the consequences of such an action right? Implying that one of the MAIN girls is a prostitute is an incredibly ballsy move considering how much of the community (me included) consider that a red flag.
I ALSO feel like you're missing some of the point though with the, presumably updated, Chika comment. It's not that Chika ISN'T a virgin that people are concerned with, or else every Milf character would get the same complaints. It's that she's a main girl who ISN'T initially portrayed as a prostitute, people first see her as Chika, a goth looking girl who's apprehensive about friendships or something. Not someone who has sex for money. So when they eventually learn of that, it upsets them because it comes from pretty much nowhere. Unless I'm wrong, you can't find any mention of those rumors that Chika tells you about. She herself mentions how "people say she has sex for money," yet the MC doesn't hear any of that. Could've maybe used that as a plot point or something, had a couple of the other students mention those rumors and maybe the MC confronts her about them at some point or gets curious enough to look into it, but whatever. Missed opportunity and what you are seeing are the consequences of such.
THAT's why people are kinda mad, it isn't foreshadowed (to my knowledge). So it comes from nowhere. They see a tattooed goth girl and JUST that. They don't give a shit she isn't a virgin, or like 90% of them don't? I imagine a couple do, but that's all. So people have no idea what awaits them in the future of her story. They have no idea that her first H-scene OPTION is prefaced by a "I have sex for money" reveal. Then followed by her exiting a love hotel with another man a day or two later. Plus there's the fact that most prostitute-esque characters are limited to being side characters, the fact that Chika is a main character and is a "prostitute" (apparently the quotes matter), is also a point of concern as she goes against that stereotype.
THEN, there's that rumor where you basically benched Yuka and Eri (banished to the side character roster) to further develop Chika's story, which I imagine definitely adds to the disappointment as Yuka is at least a common character.
Ooh, real quick piece of advice, I might also recommend an in-game walkthrough as that might help people pick up on the fact that SAYING NO TO CHIKA'S H-SCENE GIVES YOU MORE POINTS with her.
Anywho, no idea how you're gonna solve all this trouble you've caused yourself, but... good luck? again? Guess I'll be back in another 6 or so months? Since it seems to be taking a while.