Just can't stand when people say spirit magic without context.
Just go on the assumption that you're future self is possessing Aang when your current self isn't and Aang is just eternally imprisoned in his mind/body/whatever forced to watch you live life in his place. You know since this apparently happened before bk 3.
So,what exactly do you want to call it then?
I mean,Im all ears because it most certainly is not the traditional timetravel of science-fiction fame nor anything magic induced as you would find in fantasy inspired stories.
Thats so far from wholesome it hurts.
Stop ignoring all our other waifus,you monster.
I'd say the chance of getting it on with Jinora is pretty high since we've got multiple hints, like with her being the one to catch us spying on Korra and her being the only one to not believe the whole 'scratch an hitch' bulshit.
Though she also has the same swimsuit as her younger sister so it could also be taken as a hint that she won't be involved.
Would second that since the hints are definately there and incest isnt exactly a hands-off topic for FET.