12 chapters in and no NTR has happened outside of non-canon bad ends. Vanilla playthrough has stayed Vanilla and I don't see WWG changing that in the teasers we've gotten so far.
I don't think you understand what NTR leaks mean.
1. sometimes a bug occurs where an NTR scene shows instead of harem scene. the bug will get fixed. but some people still see the scene.
Even if this never happened in this game like you claim, there is always the
potential of it happening.
as it happened many times in many other games. If there is no NTR in the game then this potential disappears.
2. misclicks happen. in this game it is not an issue since you can disable NTR in the settings and it will hide all NTR scenes.
3. "near" NTR scenes where the dialog and scenario teases you with NTR without following through. Things like other guys groping your girl before you intervene, its not NTR because he didn't fuck her. But you still watched another guy groping your girl. Or your girl seriously considering cheating on you in her inner monologue, but then not doing so due to NTR being disabled in setting. etc
4. "actually legally speaking this is not NTR according to NTR lawyers" type scenes.
5. altering the waifu's character from a loving wife into a whore on a leash. you can optionally avoid getting cucked this one time by yanking her leash. But it massively degrades her appeal.
This is not actually mandatory. I have seen games where the NTR is done without doing this (ex: superhuman). But 99% of the time where a dev includes optiona NTR they will go with "whore on a leash" route.
6. dev postings teaser videos or pictures of content which explicitly show NTR scene.
I would like to point out my post was in reply to a discussion on why harem fans do not like it when there is optional NTR.
Thus those statements are not explicitly specific to this game.
Even if this game is completely airtight and never leaks any NTR, people got burned enough times on other leaky games that they would be wary.
This specific game is not airtight.
I just recently got burned by seeing hunter fucking a waifu in a dev post.
I now avoid dev posts. Also this gave me PTSD
(less the NTR and more just hunter being so vile)