Thanks for your reply mamu. I've already tested above 5 files on game, however, even if I edit the 19996.TOTEXP, FNTCIDB, FNTSYSB and FNTTXDB files and repack it, there are no changes. (Except ICONSYS. I didn't try it on.)
Actually, I've upload this discussion on xentax (forum.xentax.com/viewtopic.php?f=10&t=11503). But the problems are not solved.