I get that, and that's why its so annoying. The character premise has potential.
I mean, it would not be anywhere near as irritating if she WAS Japanese. I mean fine, Harada's obsession with Idolmaster has reached its peak with the character, i get it. But it could have been a clever subversion for her to break the role.
Being a foreigner, have her bust out with perfect english and a normal attitude for a few seconds or some shit for a comedic moment. But no, apparently she might as well have been a Japanese character entirely with the same generic idol attitude seen everywhere and not batted an eyelash about it. Its a waste of a character idea...but this is the game that gives Panda and Kuma separate slots over some other requested characters..
The best thing about T7 so far for me is the fact that Xiao's moveset is relatively untouched and her new default outfit is boss