itch.io

Actually, I've already changed the font. Of course, I didn't change it from the option. In-game fonts do not support the language of my country, so translation will not apply unless I change the font file.
I used the game by changing the name of the font file that supports the language of my country and replacing it with the font file of the jar file.
It's been going well so far without any problems, but I can't find a way to reduce the size of the letters, so I'm playing the game a little uncomfortable.
If I choose the 'Arial' font in the option, the translation doesn't apply, only the blank square letters come out.

What you said was a hint.
I changed the name of the font that supports my country's language to 'Arial' and applied it to the game and found a slightly smaller text.
I don't know what kind of error will happen, but I don't think there's a problem so far.