I dislike all forms of NTR myself, so no, none of my projects will ever feature NTR.
The original series (Anime) has a lot of fan-service, so some characters will expose themselves near other characters, this happens much less in the Light Novels. There's a scene (Anime only) where a character gets groped briefly, but outside of that, there's no NTR (in fact, all the heroines are pretty loyal to the MC).
There's also a filler episode (So not the original series) where heroines get groped by tree tentacles.
Even those minor details featured in the anime which could be considered slightly NTR are not present in my game since I follow the Light Novels anyway.