Honestly? I think a lot of writers are leaning way too hard on the obvious 'enemies to lovers' tension between them and missing the quieter, weirder stuff. Sure, their dads tried to kill each other, but the more interesting angle for me is how they're both legacy kids navigating expectations they never asked for. Thrud's carrying the weight of being Thor's daughter, this symbol of Asgard's might, while Atreus is literally carrying the burden of being Loki, the World-Ender.
I read this one story where they kept meeting accidentally while trying to gather ingredients for their respective fathers—Thrud for some Asgardian mead recipe, Atreus for one of Kratos's weird stews. The conflict wasn't about fighting; it was about this awkward, grudging exchange of knowledge. Thrud knew where to find a certain herb in Vanaheim, Atreus knew how to prepare it so it wasn't poisonous. The whole dynamic was built on this unspoken trade, each helping the other meet a familial obligation, all while knowing their families are supposed to be at war. That subtle barter system, that transactional kindness born from shared pressure, felt way more authentic than another sparring session turning into a makeout scene.
It's less about romance and more about finding the only other person who gets what it's like to have a dad who's a mythic figure with serious baggage.