xxerikxx My advice, make it easier on yourself, and only do sex-scenes with the MCs.
From what i have gathered from the brief reading of comments, there are two MCs you follow?, and there are other sex scenes not involving them. Remove the latter, while it is technically not NTR per se, people will still it as such, especially if one is MCs daughter and there is the incest tag. Like her having relationships n shit is fine... just don't show it. As that will be seen as NTR, like think about it from a real life aspect in this sense, would you want to see your daughter having sex? I know this is a porn game so I explain more here:
Also since there won't be incest incest, I also suggest removing the scene or changing the script that causes the need for that tag, although I don't see why sexual tension would have the need for the tag if it goes nowhere.
Basically Trim the fat so to speak. will allow you to remove certain tags and avoid futher confusion, and turning off people that only check the tags. Also the removing of that cest tag would help if you want to do patreon. (Less is more in the case of following different people, unless the point of the game is to not have a specific protag, and follow many, but sounds like there are 2 specific protags from the comments)
Now as for what NTR tag actually means, while it is sometimes used here to mean Netori, NTR doesn't actually include Netori, NTR is exclusive to Netorare and Netoraze (female is unwilling).
Netori when tagged is tagged as Netori, however f95zone doesn't have that tag afaik. Sometime on other forums I believe Netori is abbreviated to NTRi, but pretty much never NTR. I believe only some f95zone games use NTR for NTRi because there is no tag to use for NTRi. So if you plan to have Netori, I would add it to the genres.
Disregard the stuff that isn't valid to the game, as I did get my info from the comments and desc of the game. My two cents, do with it as you please. My word isn't law, so don't feel as though you must do anything I have said.