Elaborate..
What do you mean by how to get voice.
Idont know what reno's games are.
But are you trying to make new voices or rip voices from reno's games?
Edit:
I see you marked the thread with a renpy tag.
So i guess you're trying to rip the voice? With renpy games you need to decompress the archives.
you will find tool such as rpatool to decompress the achieves.
But..
if you're talking about new voices to add.
i would suggest you look into AI tools.
Use some free AI Cloner tool such as F5-TTS. It does a good job with short stuff.
Just use your own voice or go to youtube and rip the audio off some actor or whatever.
you use this as a reference voice for the AI tool.
A video example, maybe its not showing. got a copyright strike on it for god knows what reason.