Unpack/Decompress
Unpack the "GxArchivedFile" archives using black_clover_unpack.bms. Models will be exported to folder "FA61C1D7" and textures to "FC397BB3".
After that they need to be decompressed using BC_Dec.exe. Drag and drop a file or a whole folder on the exe, and it will create unpacked files with the "_unp" suffix.
3D Models/Textures
Use the Noesis script to load the .mdl and .tex files. If you want the material data to get loaded too, make sure to decompress the "5E12DE0D" folder. Only the highest LODs are loaded by default, you can change that in the script.
Texture Finder Tool
Model textures are only applied if they are in the same directory as the .mdl file. First of all make sure you have decompressed these 3 folders : "5E12DE0D", "FA61C1D7", "FC397BB3". Now drag and drop a .mdl file on the BC_TexFinder.exe. It will copy all the necessary textures to the model directory. Load the .mdl file in Noesis, and it should have the textures applied.