Welp, looks like there's a few misunderstanding here, so I like to clear them up before other people get misunderstand as well.
1. MC and any of the LI WON'T get NTR'd, meaning LI won't have sex with any other guy than MC, meaning the LI won't have sex with both guys or girls behind MC's back or without MC knowing.
2. There's NO forced lesbian, there will be a lesbian scenes but it will be SKIPPABLE. In fact, so far there is still only one lesbian scene planned, and that is way into the future. As for the girl who played with other girl's boobs in the shower room, I didn't consider that as a lesbian scene, because they're supposed to be just best friends, and they're just a one time character who won't appear again in the future.
3. Why is there a plot to fight against NTR: It's simply because I hate NTR. No hate to the people who loves them, but it's not for me. I hate that in NTR, the NTR guy rarely get what they deserved (end up with his dick in is own mouth, and his balls in his nose, as one of you here said, to which I fully agree), I hate that the male lead just stand idly by as their love get stolen or doesn't even know it happened, and I hate that the girl lead succumb to the NTR guy simply because his dick is bigger or feels better. And I hate those so much that I want to write a plot where all of those is changed. Don't believe me? See my other game, see what happened to the people who tried to rape mc's girls. But to win against NTR, NTR itself have to exist in that world, that's why there's an attempt to one of mc's girls, but ONLY an attempt. But the NTR itself won't be shown, just mentioned like in the chapter 3 ending. Originally, this was supposed to be a different story, Yandere vs NTR. I'll explain later why it's added to this story.
4. Ka-chan (who appears in the prologue) or "a parodically girly married woman" is NOT Kashiwagi or "the blonde tomboy", they doesn't even look alike, Natsumi never even called Kashiwagi, Ka-chan. But yeah I get why some people can misunderstand that and it's my fault for not explaining this further. Ka-chan is just another one or probably two times character. There's two LI that doesn't appear in the prologue, and that's on purpose.
5. Why Natsumi who has a yandere potential fantasized about Risa: Because she's human? I mean I know she's just a character and not a real human, but who among us here never fantasized about things that we ended up regret fantasizing? Isn't that what post-nut clarity is all about? That's also why she's reluctant to share the fantasy with MC at first.
6. Why it's a polyamory rather than a harem: When I wrote this story, it was going to be a harem at first, but then I grew fond of Natsumi so I want her in every part of the story. If it's a harem, then the focus will keep switching between the harem members, and Natsumi will be sidelined. So I make it that every time a new girl join the relationship, it will be a threesome. But, if it's only a harem, I felt like it will get boring eventually because there's already a lot of harem story out there, both hentai and VN, and I wasn't that confident I could write a well-written character since this is my first writing. That's when I decided to combine this story with the Yandere vs NTR and give Natsumi the yandere potential. But a yandere and a harem doesn't work well, so to compromise, Natsumi will also own the harem, and that turn this into a polyamory, apparently.
7. Why is there so many misunderstanding: Because I thought I want to write with subtexts, since Lessons in Love, one of the VN that inspired me to do this has lots of them, and I want to see if I could do that as well. So, rather than writing a straightforward story, I write one with a couple of subtext that you can connect the dots yourself. Since I felt very happy when I read the discussion about the subtext explanation in Lessons in Love forums.
