Dear BrunoBanas,
I'll try to answer your questions as best as I can.
Q: Am I planning or is there NTR (MMF) in the game?
A: So far there is one swinging (MMFF) scene in the game. I'm planning on a MMF threesome, but I don't know in which chapter. But the content would be avoidable.
Q: Who is the MC?
A: It's the dad, the man in the blue shirt.
Q: Will there be neotari where the MC steals a women?
A: Haven't planned on that yet.
Q: will the son steal his mother from his father if he's the MC?
A: The son isn't the MC and he won't steel his mother.
I hope I answered all your questions.
Regards MCK