First off: There is no such thing as Reverse NTR. NTR is NTR regardless if it's man or a women getting stolen from.
Secondly: This is more BSS than NTR. BSS = Boku ga Saki Suki = "I Loved him/her first."
Netori is just NTR except from the other perspective. The same as rape experienced from the rapists PoV is still rape.
For clarification
NTR(Netorare) = "I got cucked."
NTR(Netori) = "I cucked someone."
NTR(Netorase) = "I made my partner find someone to cuck me."
Netori is just NTR except from the other perspective. The same as rape experienced from the rapists PoV is still rape.
For clarification
NTR(Netorare) = "I got cucked."
NTR(Netori) = "I cucked someone."
NTR(Netorase) = "I made my partner find someone to cuck me."