are you asking about my opinion on them or like the name? i personally think of them as familial. although i think my opinion kind of differs from other people where they label them as "mother/son" "big sister/little brother" " big brother/little sister" etc etc. i don't think they're relationship has a strict label like that or even emulates the same dynamics as those kinds of relationships, but i no doubt think of them as having a familial relationship. they're family. idk i feel like immortal beings lend themselves better to relationships that don't exactly fit a conventional mold.

if you're asking about the name, i think that "scarahida" is used more to mean a romantic context. for platonic duo names, i think "lodish" or "hatradish" is used more.