In terms of appearance and superficial mannerisms, the little brother really reminds me of Lilia Vanrouge. I don't play TWST anymore so it feels like seeing an old friend again lol
She definitely had the start of the Fourth Stage Spirit speech bubble background there, just before the Uzumaki spirit disappeared, right? Between that, and whatever's going on with her relationship with her father, there's definitely something Unusual in her background...