So we all know that Julius was a good boy who'd never say the dreaded F-Word, until the he used to looter book. Now I headcanon that Julia was a complete asshole until she used the book of naga at some point. I've also used Kaga so much, that my phone autocorrects something's to Kaga.
I can’t honestly see Julia as anything but sweet and kind.
Also your phone automatically correcting to Kaga is dank. The correct way is Kaga’s way.