I remember playing AP for the first time, back in 2022 and reaching the NTR point around the 2nd chapter I believe. My first choice was the obvious one - because I kinda suspected what would happen.
But then I reloaded my save afterwards & gave it another try, this time avoiding NTR to see how it would affect the game. Unfortunately, it did not... I'm not absolutely sure at this point, but from what I remember the only notable difference occurred later on, when Danny encounters that green ghost bear at Vlad's house, as some of the dialogue between Danny & Maddie was slightly different, modified to make more sense. Nothing more and nothing less, the story stays the same.