Does the novel have a audio option so it reads it to you?
it does. renpy has native support for it.
renpy uses the native system apis to dictate text for you so it sounds like whatever speech engine the system has by default, which makes it usually sound like siri on mac and cortana on windows
and obviously it wont work on systems that dont have such apis *ahem* linux and freebsd
Actually youtube has a channel with a guy that voices all the characters and does a really good job. I certainly enjoy it. He did it for Adastra and a bunch of other visual novels.
Check it out at: https://www.youtube.com/user/Lynx890/playlists