I don't know if I'm just not doing something right, but i went and downloaded the demo from Steam after trying it on here and I have the same issue there as I did here. The voice settings don't work right. I'm not a huge fan of the way Onisan sounds and have tried muting his voice in the advanced settings, but he can still be heard talking when he has lines of text. I tested it out with the voices of other characters like Mina, and I get the same result