We're going to witness Anzu get worse before she gets better.
The point of note, though, is the specific circumstances of Anzu's, and whether they differ significantly from her mother's. Does her mother have an Ikoma in her own life? Because he's quite the confounding variable in how Anzu is perceived by those around her.
We see even Shunpei being slightly mollified by Ikoma when it comes to dealing with our Budding Diva. And for the moment, that might come down to Shunpei idolizing Ikoma more than he dislikes Anzu--but the result is the same: as long as Ikoma & Anzu are a package deal, Shunpei will bear it.
So with Aznu already showcasing some behavioral characteristics reminiscent of her mother, the important point in this will be whether she realizes it, before crossing the Social Rubicon and alienating everyone around her. As someone else said--Ikoma can simply walk away; he's a free agent of chaos, simultaneously existing outside of Anzu's sphere of influence and attaching himself to her as they feed off one another's energy. But like Anzu, he's also only in it for himself--once it's no longer interesting/engaging, he'll disappear, and with him goes Anzu's tether, and her bulwark against everyone else.
And as we see--she already has her detractors. Even as The Happy Meals is exploding, it's all built on that energy of their debut show. The moment that momentum falters--for any reason--things will fall apart real quick. And that's leaving Anzu's mother aside, assuming she won't directly interfere.
And on that note--it would be interesting to see Anzu behave this way around Mom. Would game recognize game? Would it knock sense into Anzu, to hear her mother compare them? I kinda wonder if we'll get that, at a point where Anzu's collapsing in on herself as her connections fray and she finds herself in freefall due to her ego. But that's speculating at plot, and I cannot say I can predict where this will go next.
I think their musical career will take off, though, and we'll bear witness to a joint rise for them in the music community and a fracturing and rotting of the inner circle as Anzu clashes with everyone around her in her feverish desire to continue pushing forward.
The trick will be the balance, and whether she has her moment of clarity before her tether snaps.
Thanks for the TL. Easily one of my top 10 series for the past year.