I found it RPG Maker Net : http://rpgmaker.net/forums/topics/1655/
fonts : http://rpgmaker.net/users/kentona/locker/Fonts.rar
Install it in your Windows/Fonts
font changer : http://dl1.rpg-atelier.net/ressourcen2/programme/chgfont.exe
If this problem isn't caught, Install korean font "굴림(Gulim)"
It is as much as I know about that problem.. Gook Luck!