Netorare is a Japanese word that means when your partner has sex with another man. Amelie is Davie's wife, and when Amelie has sex with MC, it will also be netorare. I think because it has not been proven yet that Davie cheated on Amelie or that Davie has another girlfriend or wife, in that case, I think Amelie and MC's relationship will be NTR. I just highlighted what I learned about netorare from Google, besides, I don't know anything else about NTR.If you think about it from Davie's perspective, Amelie and MC's relationship would fall under NTR. If you think about it from MC's perspective, it wouldn't be NTR because a player would play the game by putting themselves in MC's place , so it wouldn't be NTR.