About This File
Unpack the archive and put the modified file in \Never_Alone_Data\Managed\ within the main game folder, replacing the original.
This should remove the pillarboxing (black bars) from every place. Keep in mind that it also leads to the in-game videos getting vert- (cropped). All of them can be skipped and watched again from the menu at any time, so simply setting the game resolution to 1920x1080 to do so is an option.
Tested with the latest Steam version at 2560x1080.
You can buy me a coffee here.