You need to turn on this feature before the emulator will load any custom textures.
Many websites and videos mention a "NSUNS-4" mod, which integrates textures directly from Naruto Shippuden: Ultimate Ninja Storm 4 . This is a complete mod pack that aims to give the game a facelift and is often distributed as a combined "Mod Textures and Save Data" download (around 131 MB). You need to turn on this feature before
: Adds textures for characters not in the original game, such as Baryon Mode Naruto Edo Tensei Hiruzen Izuna Uchiha Aesthetic Changes You need to turn on this feature before