I don't think it's Netori, since DEV said that the daughter (female MC) will be able to betray the father (male MC).
I may be mistaken, but I think that her daughter is going to "help" Frederico (nerd, fat and virgin) to have a little "fun", and DEV thinks that the people who are here are a bunch of fat and virgin nerds , and so feel a little empathy for the boy and accept this NTR.
So I am sorry to inform you DEV, if this is your plan, you are so, so, so, so wrong.
And yes, if you give us this option to choose between having NTR or not, that's fine with me, but you need this statement that we like NTR, this tag is something very difficult for many here, just the fact that it is present in a game it’s already a quick pass. Even though it is preventable only from this one, many already totally ignore the game. Personally if it is completely preventable, and I can make it never happen, I will do it that way, but if it is forced or it causes a hole in history when I avoid it, I simply pass the game.
So again, believe me when I say that what you plan, may seem cool in your head, but I'm 99.9% sure, that it is impossible to make someone who doesn't like NTR like this NTR.