>>37211939 (me)As for why it "didn't work out", well remember in the first place, the actual critics and complaints were mostly contained within 4chan, the majority of the normie fanbase masses out there on YT/reddit/twitter didn't see or didn't care about how "awkward" Takamori actually was, they loved it nonetheless and ate that shit right up until the end. Shippers and /u/schizos mostly just use the characters as projections for their own headcanons and fanfictions anyway, they don't actually care about the "source material".
But anyway, yeah it was a pretty big casting mismatch in retrospect. I don't know what "character types" they envisioned to play when they came up with Takamori, but they were both not good enough actors to make it work in the long run. Kiara was probably supposed to be a loveable clingy/pushy ditz, but she just came off as overbearing and desperate with her constant "Calli my wiiiiife!!!" shtick, which probably did more harm to her character in the long run with all the (self)flanderization and how she basically hitched her own identity to that of another, because it prevents you from developing your own independant character (in contrast, for example Ame was probably smarter in the beginning in not letting herself be defined as only "Gura's sidekick" instead of making Gurame "official").
And Mori was supposed to be the cool tsundere or whatever, but her "ugh...s-shut up, Kusotori!" response part of the act too often just came off as sandbagging, gruff, hurtful, dismissive or bitchy (didn't help that in the beginning she was still working additional jobs so she was often tired and grumpy in collabs). And this whole boring act (Kiara being overbearing, Mori sandbagging, rinse repeat) just went on for a few months with no development or resolution, and became more and more stale and odious.
And it all fell apart as Kiara moved away from Japan and Mori, they didn't have much of anything connecting them anymore (showing the bonds and pairing was more of just circumstance and convenience at the time instead of an actual deep mutual interest in each other and they don't really have much in common). Mori was too occupied with her own work at the time so she "ghosted" Kiara (at least that's what it felt like for her, and hey, even Mori admitted later she was kind of a shitty friend at times), who was pretty down about it during/after the move, but found new/"better" (as in, more responsive) friends in the meantime so she's not as dependant on Mori anymore and can treat her normally as just another colleague now. Which is arguably better for both of them.
Anyway, because "official" Takamori collabs or even just interactions dropped so much after the move that even fans noticed and began to ask questions, both girls separately more or less had to clarify in response to questions that the "official" pairing is pretty much done and over and they should stop bothering them (another unfortunate side effect of being paired with another, it hinders your interactions with other people because your shipper fanbase becomes annoying about "omg what about Calli/Kiara, your wife's gonna be sooo jealous!!"). Now of course, shipperschizos didn't get the memo immediately and it continued on for a while due to simple fandom inertia (there are still some lost souls out there making Takamori art, for example), but over time most of the fanbase chilled out (or moved on to other pairings, if they were only in it for the /u/).
In an ironic twist of the story, it seems nowadays that Mori is the one that's trying to shmooze up to Kiara again, seeing as how often she shows up in her chat with supportive messages, while Kiara plays it more cool these days and isn't as overly fixated on Mori anymore (sure, you could argue that's because Kiara is focusing her yuri shtick on her other pairings now, but these actually play along at least). Maybe that's how it should've been from the start ("Reaper of Souls trying to catch Immortal Phoenix" also just makes more sense from a lore perspective instead of the other way around), but anyway, you never know what you had until it's gone.
tldr: why yes I write thesis papers on the fictional relationships of anime girl streamers
