Once you have naruto-shippuden-uns-apun-kagames-part04.rar sitting in your folder alongside Part 01, 02, and 03:
: Use their internal search bar for "Naruto Shippuden Ultimate Ninja Storm."
Are you trying to complete your collection of game files for ? If you are downloading the highly compressed version from ApunKaGames, you know that missing even one "part" can prevent the entire game from installing.
Most large games are split into multiple .rar or .zip volumes (Part 1, Part 2, etc.) to make downloading easier on slower connections.
: You only ever need to right-click the first part.