Thanks for your help, I was trying it on a Windows 10 VM earlier and it had some issues with running the game from another drive.
I managed to figure out that there's nothing wrong with the game files, it is in fact ready to run with the translation.
I was trying to run it on Linux using Proton and while the game itself runs fine, it's not modded.
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After spending some time reading the documentation for BepInEx, it seems like it uses winhttp.dll to inject itself into the game.
I just needed to add that in Wine config and now it works great, with translations and all.
I just write this down here for any Linux users who might need help in the future.