no no, after that there's a scene with only mom-daughter without mc
Not NTR as it was a prior relationship. Also, AFTER erica and naomi were both LI's, the mc gave permission to the both of them. Still not ntr.
None of this was designed to make the player jealous. Again, not ntr.
So..its, of course your perspective, but telling others that there is ntr, based on your opinion, should be avoided.
The OP has big yellow letters to warn people that have that mindset as well, ahead of time.
I sometimes think that people get "NTR" mixed up with " i dont want any girls with anybody else under any circumstances" .
One of these things is not like the other.
One of these things is NOT Ntr.