In search of Granblue Fantasy Versus files

[Makoto]

I believe that you extracted the image as PNG, the original textures are probably in TGA format which has an Alpha channel. Exporting an TGA file into PNG will merge the Alpha Channel and remove some details on the diffuse because of what's left in the Alpha Channel. My fix here is that export the texures as TGA.

I did extract it to TGA at first and tried the TGA (uncompressed) option as well; unfortunately it all still turned out the same and the alpha layers are missing.

beside not all tex having it, check the _sss or the _ilm textures, those should have it. Try both tga and tga uncompressed again, and open it with photoshop(must work unlike other stuff like paint.net), alternatively try converting those tga to tga again with noesis or to png, then back to tga, or dds
everything here works fine