>>153836
>Harem is harem and NTR is fucking another girl without your waifu knowing.
>>153843
>cucking =/= NTR
>You fuck another girl without your waifu knowing, sometimes she might end up finding out, getting depressed and shit, that's NTR.
>Cucking is when your waifu allows and incentives you to fuck another women with her knowing you are doing it, sometimes even watching it.
>>>/cuckquean/ here. This anon is correct. It's different. NTR is having one's spouse stolen, usually without one's knowledge (寝取られ = lit. "to be stolen from while sleeping" - it's a pun on the unawareness of the victim* plus the thievery itself is the act of "sleeping with"). NTR fetishists usually get off on the concoction of powerlessness, humiliation and emotional rage that accompanies this. In these stories, the stolen spouse usually abandons the victim at the end either literally in the sense they leave the man or figuratively in the sense that they sexually abandon him.
In English we distinguish between cheating (when either partner doesn't know), cuckolding (when the male partner does) and homewrecking (where the relationship ends as a result). This is why NTR is confusing as a term, because it's a combination of all three English words at once.
Cuckolding shares a lot of parallels with NTR, to the point where guys who are "just into sharing their wives, none of that humiliation shit" prefer the term hotwifing. But fuck the male cucks, we don't care about them or their words.
Your Bicorn (and your Hakutaku) sounds like a compersive cuckquean, which is a cuckquean who encourages her man to fuck other women because she gets off on the pleasure and variety her man gets to enjoy. There's no possibility in this cuckquean's mind that she's inferior, that the relationship is under threat or that her spouse isn't going to fuck her brains out when he finishes with other girls.
The other kind is the humiliation-driven cuckquean, who resembles the male cuckold more closely. These tend to be more visible on the Internet because broadcasting it to others plays further into their humiliation. This type of cuckquean gets off on the idea she's inferior, that she's powerless to stop the cucking even though she adopts the posture of disliking it, that the relationship is under threat, that she'll no longer get any sex from her spouse, etc.
This second kind is what the Japanese mean when they label something "reverse NTR" (逆NTR). The first kind is almost never pointed out as a special category, it just appears sometimes as a character type in harems or in some multi-girl stories. You'll start to see it if you know what to look for.
So in conclusion, be careful about throwing NTR-derived terms about next to harem and cuckqueaning because they lack context and sow confusion.
t. expert cuckquean
* This is also why antlers or horns were a symbol of being a cuckold in the middle ages e.g. in Shakespeare - everyone else can see them but the cuckold can't. See >>>/cuckquean/310 and >>>/cuckquean/1317