The official series by CyberConnect2 ends with (and its Road to Boruto expansion). Since the game you are looking for does not exist as an official release, you are likely looking for one of two things:
To run these mods, you generally need the base ISO and specific "Save Data" and "Texture" folders: Discover The Best Naruto Games On The PSP - Retro Dodo Naruto Shippuden Ultimate Ninja Storm 6 Iso Ppsspp
Title: Unleash the Shinobi: Naruto Ultimate Ninja Storm 6 ISO for PPSSPP (Mod Guide) Introduction Ultimate Ninja Storm The official series by CyberConnect2 ends with (and
: Adds characters that were never in the original PSP games, such as Madara (Six Paths) Adult Naruto Adult Sasuke , and even characters from the Custom Jutsu & Movesets : Many mods include ported movesets from Ultimate Ninja Storm 3 However, the "Storm 6" search term typically refers
for the PPSSPP is that it . The actual Storm series ended its main numbered entries with Storm 4 (and later the Connections collection).
However, the "Storm 6" search term typically refers to highly popular for the Sony PSP emulator, PPSSPP . These mods use the base game Naruto Shippuden: Ultimate Ninja Impact —the final official Naruto release for the PSP—and overhaul it with textures, characters, and menus from later console games. The Evolution of Naruto on PPSSPP