I think they should state that NTR is inevitable because the MC's mother has a sex slave relationship with the police officer if the mother is a love interest I think it should be considered NTR
		
		
	 
It has been stated many times in this thread that the NTR will be unavoidable.  I'm guessing that the reason that it says "avoidable" in the OP is that it was written by someone other than the developer, and was written at the time of the original release.  At that time, the only real NTR scene was in the jail, and that's avoidable.
To be perfectly clear, for anyone who hasn't bothered to read the thread, NTR is a major focus of this game, and it will be unavoidable.  There will be two main paths for the player to take in this game, but both will include NTR.  There will be the NTR-lite path, which will include only as much NTR as is necessary for the story, though it will probably still be a significant amount.  And there will be the full NTR path, which will have lots and lots and lots of NTR.
	
		
	
	
		
		
			because the mother will stay with the police officer anyway and the Grandpa stays with the maid and not to mention that their penises are bigger than as we know in these types of games, characters with bigger penises will always be preferred.
		
		
	 
Actually, the MC's penis is bigger than the maid's.  But yes, the cop has a much larger penis than the MC.
	
		
	
	
		
		
			not to mention that no NTR scene is avoidable...
		
		
	 
As I just mentioned above, the NTR scene in the jail is avoidable.