"highly compressed" versions (repacks) can reduce the initial download size to as low as for the first game
The Ultimate Ninja Storm series varies significantly in size. Repacked or highly compressed versions often strip unnecessary language files or use advanced compression to make the files more manageable. Can I Run NARUTO SHIPPUDEN: Ultimate Ninja STORM 4
If you specifically want the first Naruto Shippuden: Ultimate Ninja Storm (the one that covers the Kazekage Rescue arc up to the Pain arc):