I am currently using the dejavu sans mono font, which renders latin characters bearably. However, Japanese characters are rendered very poorly. The antialiasing makes them almost transparent, and that makes them fade against the background. They are legible, but just barely. Disabling font antialiasing makes things even worse as the elements of the characters start floating together.
I have tried changing fonts to see if another font would work better, but the rendered Japanese characters does not change at all, nomatter what font I set. So, I am guessing that the Japanese glyphs are being rendered with some other font. Is there anyway to select the font with which the Japanese characters are being rendered?