As I’ve said before, I am taking elements of the manga, predominantly, leavened by the anime for my various Sailor Moon adaptations

In particular the first anime providing an actual backstory for Haruka and Michiru, though their arc is modified by virtue of the talismans being known factors from the start, with the actual goal of the Death Busters the capture of the Silver Crystal of either Sailor Moon or Small Lady (not that picky) to collapse the barriers between Earth and the Tau Nebula.

I use a somewhat different take on fanon re: Tenohs and Kaiohs as well. The Tenohs, not the Kaiohs, are the half not-Japanese family, with that other half Ainu and their having a mercantile background, first in the open city of Nagasaki and then as leaders of a major Zaibatsu and its post-WWII shape. So Haruka *is* from an affluent family, which by virtue of preserving its Ainu heritage also is conscious of both being not entirely Japanese and thus less beholden to specific Japanese prejudices. Meaning that Haruka’s grandfather both deciphers a direct connection between the Daimon attack on Haruka’s family and the appearance of Sailor Uranus after, and serves as the ‘patron’ that gets mentioned in the Manga as subsidizing Haruka and Michiru.

By contrast the Kaiohs were Daimyos who fought Nobunaga, lost to him, switched to Ieyasu, prospered during the Shogunate as some of the most powerful landowners in Japan, ultimately switched after the Satsuma Rebellion to Imperial Japan…..and are staunchly traditionalist aristocrats who are literal aristocrats who hold onto titled descent from an ancient clan.

And when THIS family has Michiru, who not only has no interest in marriage, nor the formal trappings of the lifestyle they prefer and then there’s the dark dreams and her stalking Tenoh Haruka (which bothers them less for the lesbianism, though that does serve as a bigger issue, and more for the horrific prospect of a public scandal over it). So she’s 'emancipated’ in the sense that they deliberately neglect her and go so far as to give her her own space, which is the one the Outers ultimately end up making their home.

The Tenohs care for and accept Haruka, and are dubious about Michiru due to the stalking thing (and even if they suspect things they don’t know for sure and Senshi magic means up to a point they CAN’T). The Kaiohs opt for the 'not saying we hope they both die in a fire, but’ approach and essentially close off their relationship to Michiru altogether.

This is at least a part of why the Harumichi dynamic I write has Michiru being more than slightly possessive of and codependent with Haruka unless an outside factor shakes this up slightly. Michiru does what she wants to do, and makes the heavens tremble with her successes regardless of the cost. Haruka, by contrast, is a flightier free spirit in accordance with the wind and who gets far more indulgence by a lot of people to be.

Unlike some takes on Haruka but with elements that owe influence to DocHolligay’s excellent Harumichi aspects, her more blustering public persona is a self-aware mask that hides a great deal of insecurities in part and in part is a deliberate obfuscation by someone far cannier than her mask lets on.

This also hinges on the stories centering the dynamic of the Outers, who have that very different function in and out of universe to the Inners, and their dynamics in turn differ precisely as one would expect in those contexts. The Outers, up to a point, deliberately create and cultivate masks for reasons that extend to their arcs including practical aspects of life with celebrity and fame and how the public personas and perceptions can grate on the individual personalities behind those masks.

Setsuna’s mask is that of the wise and mysterious and virtually omniscient Sailor Pluto, which is just as much a mask and just as much bullshit as the masks that Haruka and Michiru wear. She truly is the most ancient and powerful of the Senshi but in the context of life on Earth she’s much newer than some of them and in some ways far more alien than the rest with much less ability to hide it.