If you are more interested in Ava.. and you chose to meet ava at her workplace you instead of going home to meet zuni you will be on the Love route. Isn't that what people want that are not interested in NTR?
Meeting Ava = Ava Love path
Meeting Zuni = Ava NTR path
Well, no. People who want to build a harem also want to check out other girls wiithout the girlfriend cheating, and people interested in NTR maybe don't want to see an uninterested, negligent husband, so they meet Ava.
The biggest problem in these games is always that choices made for the main character are actually questions aimed at the player, just like this example, which is actually bad. Whether the main character goes to Zuni or meets Ava doesn't tell you anything about what the player wants to happen.
In many games, when the main character says "I don't like NTR", this closes off the NTR path, because the developer thinks the player doesn't like it. Which is wrong: I want to see NTR without the husband enjoying it, so...
In a nutshell, if you want to know what the player wants, you have to ask the player, not the main character.
There is NTR off/On switch
That's good. Now, NTR off should mean that all decisions lead to an NTR free story, and NTR on should mean that all decisions lead to NTR.