I gave a pass earlier because you made a good point with the meta-narrative element that a character can be outed as a romantic option before the story actually develops them as such, even if I think that it is rather silly for a player to start feeling possessive of a character from the start instead of letting the story play out and build that feeling up as intended by the author.
But the rest of that is bordering the "every attractive character must exist to only interact and have sex with the protagonist else its ntr" rubbish. The player isn't "witnessing an event", it is going through a crafted piece of storytelling. If the writing makes no attempt to goad or amplify the feelings of jealousy, then the game isn't
evoking NTR feelings, the player himself is reaching for and calling forth those feelings without any real provocation.
This is what I meant earlier that there is a difference between "death of the author" and "delusion-fuelled media illiteracy".
and i think it's not really accurate to claim that it is only about perverted voyeurism.
The writing in that scene only shoots for 2 things: first it points out how incredibly kinky it is for 2 futanari sisters to be going at it with each other, specially given Yui's "prim and proper" façade, and second it plays up the exhibitionist aspect when Onori notices that Yui is nervously looking around thinking there is someone watching them.
At no point it makes any comments like "forget about Yui ever being with Riko because Onori took her" or "Onori took Yui because Riko was too pathetic to prevent it". It is just not something that is at all in the mind of any of the involved characters or the author writing the scene.
That said, i think if some players feel like Onori fucking other girls (not just Yui but also her friend, and possibly others) is "NTRing them" then i wouldn't say they're entirely out of place here -- witnessing such events certainly can evoke feelings of jealousy and sense that the girls' attention is drawn away from MC
I do want to say, the game totally could do NTR scenes involving Onori fucking other girls. Hell I half-suspected that could be where some of Aiko's content could go (although I imagined it more like a "NTR-play" scenario, where Aiko really is just friends with benefits with the two of them but plays along because Onori likes to roleplay the dynamic due to her sadism and Riko's masochism).
But it just simply hasn't yet.
sense that the girls' attention is drawn away from MC
I do want to mention this specifically on the game's context. During the big lore dump in Yui's relationship level 4 scene, she explains that part of the problem she and Onori have with each other is that, while she can have sex and enjoy it with both parts and feel aroused and orgasm, she won't feel satisfied and will stay pent up unless her "male part" is tended to, which Onori refuses to do for Yui because she is a bit selfish and wants to only top. She is willing to toy with Yui's dick but only to tease her because she knows Yui is much more suggestible when she crosses to her super aroused pent-up state, which Onori then abuses to get Yui to agree to have sex with her even when she wanted to hold out to teach Onori a lesson.
Just to say that even that angle of "attention drawn away" was more or less addressed, since we can probably agree on who is gonna be taking care of the "male parts" of the sisters in the near future.
I don't think this is a matter of fairness. Or rather, it is but humans don't really work this way -- it's perfectly normal for people to hold themselves and others to double standards and thus feel hurt if characters they have feelings for get involved with each other, even if the player isn't "monogamous" in their feelings themselves.
No, "perfectly normal" is to experience your feelings, examine what they tell you about your likes or dislikes, then make up your mind on if you want to keep following the game or not. If you want to go the extra mile you leave a helpful and informative review.
What this vocal minority of people do, that mislabel everything NTR, shriek about it in their own uninformed complaints, and then curse the dev and all of their future endeavors for somehow making a cuck out of the player, it is not "perfectly normal", it is barely tolerable, if that.
I have followed like 3 different devs who have all at some point basically vented that the rabid "anti-ntr" crowd is the most insufferable one to write porn games for. And unfortunately you can't really just ignore them because
real NTR is a very heavy and divisive fetish that most people do want to avoid, and this vocal minority goes the extra mile to shout everywhere about how it is a "NTR game" if you ever add any scenes between secondary characters, or a swinging scene, or just an orgy where the "wrong" set of characters got involved with each other.
It is the equivalent of shouting that a game has "gore" because there was virginal blood in a scene, or its a "rape game" because there was a scene where characters were under the influence of aphrodisiacs and pheromones.
This seems quite common in the circles of harem game players, who much prefer to be sole center of attention for all their romantic partners, and often dislike if these partners also get involved with one another.
I have seen every single variation of this under the sun:
Girls in the harem are only allowed to have sex with the MC
Girls in the harem are allowed to have sex with other girls in the harem but only if its in a threesome with the MC
Girls in the harem are allowed to have sex with other girls in the harem but only if the MC is in the same room
Girls in the harem are only allowed to have sex with other girls in the harem
Girls in the harem are allowed to have sex with girls outside of the harem but only if its in a threesome with the MC
Girls in the harem are allowed to have sex with girls outside of the harem but only if the MC is in the same room
Girls in the harem are allowed to have sex with girls outside of the harem, but only girls
Girls in the harem are allowed to have sex with other men but only if its in a threesome with the MC
Girls in the harem are allowed to have sex with other men but only if its a form of punishment issued by the MC
I could literally add another 10 entries of insanely specific conditions I have already seen to that list, then add futa as a factor and you will easily double the size of that list. All of these people were convinced that their limit was the correct one, everything beyond it was "pathetic cuck shit", and the dev just had to
know what that totally common sense limit was and tagged their game as NTR for having 1 scene in 1000 that ever crossed that one specific (and innacurate to NTR) definition.