Quote Originally Posted by Aeyis View Post
I'm no expert on the specifics of Japanese dialect, however:
It can change things a bit. In the ARR quest where you meet Nanamo in disguise she uses ''watakushi'' which implies she is noble. (despite the fairly low grade garment she is wearing) The dialect she uses kind of gives her away, as it's a ''formal/old''ish- dialect. Because of that its fairly obvious that it indeed is Nanamo in disguise.
The dialect she uses is very much a ''highborn'' dialect. Using a different dialect for her would portray her as a different person, I think.
That. . .rather clearly illustrates his point, no? Her dialect gave away her origin without changing any meaning.