It's not exactly ntr. There will be Amber-Henry scenes for example if you choose to give him advices and leave Amber alone from the start. So technically it's not ntr since she's not your gf but in a way it is ntr cause in other routes she is your gf.
Not a fan of that but at least put some warning on the choice to give Henry advices. If you dont like NTR is waste of time making scenes with other guys beside the MC, time better used to make scenes for the MC.
