If the hero happens to see the heroine being raped, use this as a threatThis game doesn't have NTR but since NTR seems to have slightly different versions for each person so I will explain for us what it is:
Even though the NTR clear translation means "neotare" which is "cheating" in Japanese in the adult-world and in the games found in these websits it generally means when the player or hero loses his loved one to another. i.e the loved one cheats and the hero/player sees the cheating as their loved one is being "stolen" from them.
With this definition our game will never have NTR as in our game :
The heroine may do lots of men but she is the heroine (not her husband or loved one) so it is not NTR. It would be NTR if we were playing the husband.
Same with the heroes:
The hero may do lots of milfs but they are the heroes so it is not NTR.
None of the above players will lose one of their conquests to another.