As I am reading it now, it'll take me a bit to reach them all. I am using the "Japanese + English" mode, reading both in JP and ENG at the same time (which means I am being rather slow with my progress on Noratoto, but I am having a blast readnig this VN). That said, I took a look inside the voice options and this is how they showed the characters' names:
This should be helpful for you, I think.