After all that noise above I can only say that in my humble opinion there is one core of the game that has to stay intact. And that is, of course, the NTS nature. If the MC does something with the mom, that won't change anything. If both the MC and the LI agree on that, it has no impact on the NTS content.
The whole NTS thing is about the LI doing "her thing" with other man, and giving the MC the impression he has the chance of loosing her by that, because he gets a kick out of that. In reality both know it's all a play, and there is absolutely no risk that the MC will loose his LI.
Of course there are people here that like to see that NTS going into NTR territory, but that's not going to happen. Those people always hang around in NTS VN threads to "stir up the hive". Lucky enough for them there are countless NTR VN's on this site (several a day).
Anyway - As said, If something "nice" happens with the mom, it will not change anything in the core NTS tention between the MC and the LI. It's nothing more than some nice side content and maybe some funny stuff. The core of the VN, however, will not be changed by that. As said - I have no problems with that.
The whole NTS thing is about the LI doing "her thing" with other man, and giving the MC the impression he has the chance of loosing her by that, because he gets a kick out of that. In reality both know it's all a play, and there is absolutely no risk that the MC will loose his LI.
Of course there are people here that like to see that NTS going into NTR territory, but that's not going to happen. Those people always hang around in NTS VN threads to "stir up the hive". Lucky enough for them there are countless NTR VN's on this site (several a day).
Anyway - As said, If something "nice" happens with the mom, it will not change anything in the core NTS tention between the MC and the LI. It's nothing more than some nice side content and maybe some funny stuff. The core of the VN, however, will not be changed by that. As said - I have no problems with that.