How do you think would Noelle and Ralsei interact with each other if they got the chance? What would their relationship bring out of the other?
This is something I've given a lot of thought to, and something I'm still salty wasn't explored at all in Chapter 2. So this post is both going to answer your question as well as be my excuse to write an essay about these two.
The thing is, Noelle and Ralsei are narrative foils to each other. That probably sounds weird on account of the fact that they never interact, but both mechanically and through dialogue, we see parallels form between them. They're both enigmatic, mysterious, while keeping up friendly appearances, while also being literal or figurative royalty in their respective worlds (Noelle is from a rich family and is adored, Ralsei is a prince with no subjects). They're both love interests to the leads (yes, to Kris and Susie BOTH, the snowgrave route is essentially an exploration of a toxic friends-to-lovers but I'm not getting into that here), and they're both rife with religious symbolism, as well as the fact they're both prey animals (in a world where boss monsters like Toriel and Asgore can look more lion-esque, Ralsei's decidedly goat-ish appearance is kind of striking to me). They have the same heal spell (a pray to light) and they're both "passive" in that kind of way a mage usually is in RPGs.
Noelle's arc mainly centers around agency, while Ralsei's arc mainly centers around identity. For all the struggles she faces, Noelle doesn't really have that... crisis of character that Susie and Ralsei are prone to. Even in the snowgrave route, she doesn't question herself, she questions Kris. And, while Ralsei IS an obedient doormat, it's not out of a lack of agency (he shows us as much when he puts his foot down right before the kids open a fountain), it's an active choice he KNOWS he can simply... Not Do (as evidenced by how upset he is with Susie's behaviour in chapter 1 and his epiphany about it in chapter 2, he essentially equates mean behaviour to Purposefully making people around you suffer, instead of a personality quirk or showing of emotion).
It's interesting to think about how they'd complement one another. Not even strictly in a character arc sense (I'll get to that), but just in a... character interaction sense. Noelle has this pattern of putting the spotlight on other people. Even when she talks about herself it's always framed as a way to lift up those around her, while Ralsei has this sneaky way of getting to know you without you even realising (if the rooms he made for Kris and Susie are anything to go by). I think this would result in a dynamics where Noelle (passively, almost accidentally) allows Ralsei to open up in a more genuine way, while Ralsei still tends to Noelle's needs like he does for everyone else.
It's also interesting from a worldbuilding sense. We've seen Ralsei not give a flying fuck about Anyone that isn't directly connected to the prophecy, both for humour reasons and for horror reasons (as seen in the snowgrave route), so giving him a friend that's 1) a lightner, 2) not part of the prophecy, and 3) trying to actually know him on a personal level - it'd probably cause him to actually rethink his worldview. If someone like Noelle, someone who's got nothing to do with the prophecy, can be an important person to him and a good friend to people she doesn't *need* to care about, then why can't he? Can he be someone outside the prophecy? Is his identity and purpose not confined to this, and what does that mean for him in the long run?
And, on Noelle's side of things, Ralsei would probably be a healthier outlet for that feeling of nostalgia she's so addicted to. With him around, she's allowed to just be a kid again. No appearances to keep up, no expectations to fulfill, he's a fresh start and a new friend that she's allowed to be her authentic self around because his existence is essentially rooted in tending to the inner child of all the lightners he comes across. And maybe then she'll be able to let go of the past. Maybe, though viewing her childhood through an outsider's eager point of view, she can see how far away it is, and how she doesn't NEED it to be happy. Things can't be the same, and maybe that's a good thing. Maybe they can be better.
Overall, there's also a... vague "burden of femininity" they both have. They take on emotional labour even when they don't have to, just because that's what's expected of them. I so badly want a Dark Fun Gang-esque arc with these two where they defect from the team and just decide to be bad guys on their own terms for a while. Just because they can, just to see what it brings out of them. And, they'd be complete dorks about it of course, but it'd be nice to see them breaking their moulds with people they don't feel judged by, with friends they don't feel the need to impress because they're already so similar to.
There's this one bit of dialogue I wrote for them for one of my AUs, specifically in the above scenario where they decide to be bad guys for a bit, and I feel I need to share it here because it puts into words something I can't without taking away from the feels of it:
