I think, ideally, you have a setup where, if the MC is the son, then he has two paths to choose from:
1.)NTR: help the officers get what they want from the women of his family, and he'll get his in the process.
2.) Stop the officers from going too far(penetration?) and win over the women of his family in the process.
At the moment the officers appear nigh-unstoppable. I assume there's some option involving use of video/camera to incriminate the officers, or get them on tape plotting their evil NTR schemes. Or he could plant drugs in their lockers.
A third option: turn the tables on the officer(s)! Maybe he is married with a wife and daughter...
Side note: I think the major issue people had with Big Brother was how difficult it was(sans a walkthrough) to prevent NTR from succeeding. I think the distinction is likely between "unavoidable NTR", "preventable NTR(preventable through gameplay)", and "avoidable NTR(avoidable through checking a box at the beginning of the game)."