Responses
as an aroace person, that's how I personally would view queer platonic relationships. though they're always different for every couple but that description you wrote and how the manga is I'm personally jealous of them because what they have is what I always wished I could have but never could because unless love is romantic it's usually not viewed as ''as important''

I know the story is not into putting labels. But the way i see it is it's deep profound bond or platonic love. But with the exclusivity and commitment aspects as that of romantic love. There's an intent to become partners. Without the exclusivity and commitment aspect, i'd view it as deep profound friendship. But that's not saying the former is deeper than the latter and vice versa.
But anw I'll probably never understand what they have.