There was one NTR doujin I found particularly interesting in which a woman got "cucked" by the new neighbor next to them. It started out as an NTR, but progressed into a story in which the reader rooted for the heroine to get stolen away from her boyfriend. This was because throughout the story, it is revealed that the boyfriend is a terrible person who talked behind her back and degraded her to his friends, while the bull was an incredibly sweet person who cared for the woman. In this sense, the NTR becomes justified and transitions into a case of loyalty being punished and infidelity being rewarded.
This SAO parody is great in that there is a lot of potential that Fujino has set up because of how meticulous the build up has been. Now can SAO pull off a similar scenario as unique as what I've outlined above? Probably not. Inoda has already been portrayed as an irredeemable antagonist, and any attempt to portray him in a positive light in a vacuum would be going against the narrative Fujino has been writing. In addition, Kirito wouldn't be the type to cheat on Asuna, at least canonically.
With how Fujino has been pushing the dual "corruption" of Kirito between both Liz and Suguha, I'd be interested in knowing if people would begin to justify Asuna cheating with a more caring Inoda if Kirito indulged in other women of his own volition, or if that would ruin the NTR fantasy that's been happening up to this point.
