The game mechanism being what it is ( don't quote me on this ) :
- NTR = low relationship with a character
- Use the in game cheat to adjust the relationship with a character
- Use the in game cheat to adjust the love/corruption level with a character
So far by using the in game cheat to adjust the relationship and the love/corruption level with a character allowed me to trigger every scenes ( NTR or none NTR ).
NOTE : some character(s) events have pre requisite but I can't remember all. Example : you must get a BJ from Cassandra after the first date with her to trigger some other scene/event with her.
Basement event with Nicole ( event = Nicole with either love or corruption outfits ) is at 11 PM.
Package delivery for Davide is every Tuesday or Thursday between 7 and 8 AM.
Alexis : make her watch anal, lesbian and BDSM porn several times( 4 or 5 times if I recall ) to have all of her corruption options.
If that is not enough use the search option in the upper right hand corner and select "search within this thread" or just give up and watch a porn movie.