fonts not applied to high ASCII characters After installing the @fontyourface module and adding some Korean fonts locally, the fonts are not being applied to high ASCII characters (which makes no sense as the font is specifically for those characters). The fonts ARE applying to the regular ASCII characters, though.
As I suspected, the issue was NOT off-topic. It turns out that the downloaded fonts were not set for Unicode. Most likely, they were using the euc-kr character set. Since the site uses utf-8, the ranges for the characters in utf-8 are different from euc-kr, so the default font was being used to display.

I downloaded a different version that specifically listed the font as Unicode and now the characters display correctly for that font.