Hi
Using 'Character Map' the 'Arial Bold' font does not have seem to have the Japanese Glyphs in it, but does in 'Arial Unicode MS'. I wonder if Windows is grabbing the Japanese glyphs for the other font file and that is why the Kerning seems to be broken.
BTW the Kerning of the Japanese chars seems to be OK building and running on Windows 10, but the Japanese is not Bold.
[attachment=46]HMH.png[/attachment]