This game only plays voices if it can use the Steam API to geolocate your IP to an Asian country (didn't look at the full list). Since this post uses a Steam API emulator that doesn't support changing the result of geolocation, I fixed the game to play voices everywhere.
Download https://pixeldrain.com/u/cg6TZxiS, decompress the .7z, and replace the game's GameAssembly.dll with the one you downloaded.
Sorry for interrupt, but can you please update this game? Thanks in advance.
https://www.anime-sharing.com/threads/✨shine✨-240928-すにぃる-abyssal-corruption-rj01234893.1552783/
Thank you for the last time. I'm sorry to ask again, but can I make a new request? I'd like to make the ``H-scese video'' of 真・恋姫†英雄譚-series&真・恋姫†夢想-革命-series.