For this trophy you'll need to unlock ALL Secret Factors across every Boss/Pseudo Battle in the Story.
For methods on Secret Factors and IA inputs during battles please consult with this trophy solution:
There are a total of 9 Boss/Pseudo battles that require an IA interaction to unlock a Secret Factor for this trophy. These battles are as follows:
-Nine Tails' Attack: Third Hokage vs Nine-Tails, Minato vs Masked Man.
-Hero and Avenger: Naruto vs Sasuke
-Overcoming Hatred: Naruto vs Nine-Tails
-Threat of the Seven Swordsman: Kakashi vs Zabuza
-Time to Fly: Choji vs Asuma
-The Rumbling Coast: Choji vs Gedo Statue
-Two Suns: Killer Bee vs Raikage
-Bet the Future: 5 Kage vs Madara Uchiha
-The Last Battle: Kyuubi Naruto vs Jinchuriki (Tailed Beasts) & Tobi
If you managed to fill enough stars for a Secret Factor, for each of these battles the final Secret Factor is earned!
If, for any reason, you aren't able to initiate the Secret Factor no worry. You can retry ANY battles post-story in the Ninja World timeline for another try.