The question of NTR is not really that simple, in the game there is no NTR because the main character is not married and therefore the question of cheating does not arise
. On the other hand, sex with married women is exactly NTR, which means if you want to see this content, develop relationships with those who are married, but this is only my opinion and not necessarily correct. As for the second part, all actions occur in accordance with the plot for each character, so if you do not see something, it means that you simply have not reached it in the development of the plot, or have not pumped up the character participating in the scene, the example with Bridget's sister is very illustrative in this
.