Yep, the second phase takes place outside the PC. It's the "Job" phase and it occures in a Reigns-like mini-game.
And no sadly the NTR is unavoidable. The cheating is, as you can block any contacts that try to talk to your GF (outside of the main characters which won't make her cheat), but you'll still see her getting groped and more on the shows, as she's an actress.
If you really don't like NTR, this is surely still to much, that's why i say that NTR is unavoidable