Naruto Shippuden: Ninjutsu Zenkai! Cha-Crash! Cheats :
Code - Unlockable Characters
After fulfilling the requirements to unlock a character, their mark will appear in the Kuchiyose menu. Select their mark and copy it onto the grid on the bottom screen using the stylus, taking care to use the proper stroke order. Correctly drawing a character's mark will unlock them, even if their mark hasn't been acquired.