when i play this game with sound only "VO" character didn't show up, why?
I remember when I used to play games all the time, too, and with a very loud sound, so my hearing was very impaired. You have to remember to watch out for that, too. Because loud and harsh sounds hit your eardrum very hard. I already have the Decibel Pro app specifically to measure decibels and know if they are out of the norm. I also recommend this article https://decibelpro.app/blog/decibel-chart-of-common-sound-sources/ to read about those everyday things that can cause elevated decibels, so you should be careful.