yes, just a brain-turned-off moment :P

She will not

Thanks! Hope you find something better suited to your preferences ^^

Honestly I'm not super familiar with the term. I know it means netorare, but does it also mean netorase/netori? There's no cheating going on. As described in the synopsis, the relationship dynamic is 'open' or 'polyamorous'. MC & romantic interests will be sleeping around in a manner everyone is okay with. They aren't exclusive with each other. So ... if that is NTR, then yes.