I really liked your answer about Daemonâs relationship with his brothers in Unworthy Era AU. But what about his relationship with the older generation? His parents, Aemon, Naerys, Viserys, and his three aunts?
A lot of those are things that will unfold over the course of narrative (aka I'd probably figure out some of it by writing it). If I had to give a brief take, though...
Daeron: Obviously Daemon will love his father, and probably he reminds him a little of his original uncle Aemon, in terms of being thoughtful and kind-hearted. His love of peace and religious nature OTOH are things I could see being friction points between them. It's not that Daemon wants war after having lived through the Stepstones, but stubborn adherence to "peace even when the Iron Throne comes under threat" probably reminds him of his brother Viserys at times. And we know Daemon's attitude towards the Faith of the Seven.
Myriah: She's the one Daemon feels closer to by far. She's not unreligious, but it's less of a part of her identity than it is Daeron's, and she's much more fiery/willful like Daemon, and understands him much better than Daeron, given the similarities between them. I suspect Baelor is closer to Daeron (and vice versa), and it's the same with Myriah and Daemon. Some of that is probably strategic--if she's seen as being overly "influencing" over Baelor, then there are even more whispers about Dornish ambitions. But I also think that all the anguish her secondborn son is subjected to, from a very young age, really activate(d) her protectiveness. And because he's so "Targaryen" in every obvious way, yet feels things much in the way she does, she compensates in the other direction: in giving him some of her culture, in making sure he knows that he is loved and cherished by her. And obviously Daemon lost his mother in his first life, so having one is all the more meaningful to him.
Did I say brief take? Well, you all know me...
Naerys: Obviously Daemon bounces off of her embrace of piety, but I think he carves out a big exception for her, given how much she's suffered as Aegon's wife. And her fragility, as has been brought up before, does likely remind him a bit of Aemma, even if their personalities are different. Her not-so-occasionally embracing the fantasy of Daemon being her daughter's twin complicates things too, because of course Daemon is super loyal to his actual mother, and he frequently disavows any such claims made by anyone else, but she is incredibly sweet to him, and he doesn't want to upset her, so he accepts the mothering. If I had to sum it up, I'd say Daemon is slightly uncomfortable in her company, but also wants to protect her. (You can bet Aegon took plenty advantage of that, once he figured it out.)
Aemon: Aemon is also fairly pious, which, again, not Daemon's favorite thing. But Aemon is also a genuinely impressive man, as far as ability, fearlessness, and loyalty. Daemon also grew up with him as his personal sword shield, and that likely meant lots of being held and cuddled in the aftermath of candle dreams, so of course he feels a lot of affection for him. I wonder if part of him feels insecure about how he measures up to Aemon's standards? He doesn't share Aemon's unwavering faith, and he's never been a paragon of virtue. What if Aemon thinks he's like Aegon because of that? (Especially since Aemon, Naerys, Daeron, and Baelor are all upstanding examples of character and faith, basically in defiance of Aegon's example.)
Viserys: Oh man, SO MANY FEELINGS. That's his son he never know, a son he failed, and he spends his earliest memories learning all the painful ways in which he failed him. Everything Viserys suffered, the heavy burden he's felt since returning to Westeros. But Daemon is still a child himself, so he simultaneously is desperate to comfort Viserys, but also desperate for his comfort? I think things get a little easier when he's older and the candles are banished, and time spent with Viserys feels a bit like a refuge, since Viserys isn't enmeshed in the Faith the way all the other important adults in his life are. Viserys also probably treats him as older than he is (I mean, I guess there's no "probably" about it given the fact he's been using him as an object of therapy since he was a baby), which can feel like a relief sometimes. Basically, it's very complicated with Viserys, but at least he doesn't feel like Viserys doesn't trust him!
As for the three aunts are in this scenario, are we talking about Aegon III's daughters? (They would be Daemon's first cousins, twice removed, technically. They're Aegon, Aemon, and Naerys's direct cousins.)
Daena naturally is a bit complicated, given that she's B!Daemon's mother, and probably herself feels a bit weird about Aegon's treatment of R!Daemon. That said, I think her fling with Aegon was more an act of rebellion that lost its shine after she came to know Aegon's personality better. I would guess that they're cordial, but not particularly close.
Rhaena he probably never got to know well, since she left to become a septa at some point during his childhood.
Elaena he probably likes best? She has a very devil-may-care attitude and protects her children, bastard and trueborn alike, and a love of dragons, so I'm sure she loves getting to spend time with Daemon and Caraxes. She's also still at court, so she's a regular presence in his life.