It really doesn't work that way. The NTR stuff is a combination of some events that happen about mid-way through the game (after you've already beaten it). It's not something that happens naturally, you have to intentionally carry out a specific set of actions to see the NTR events.Can someone upload a version of the game where you can click new game and it starts the NTR route?
Basically this means that if you want to avoid NTR you absolutely can, but if you want to see NTR you have to seek it out. This post explains it pretty well:
https://f95zone.to/threads/sphilias-familiar-v2-0-dorgel.40452/page-5#post-2656657
EDIT: Or if you don't want to put in the work to see the scenes, download the completed save from this post and just watch the scenes in the gallery:
https://f95zone.to/threads/sphilias-familiar-v2-0-dorgel.40452/page-3#post-2655808