Unlock the 2nd Hokage's Blade
     Go  to  the  Ninja  School  in the main town. Talk to Konohamaru.
After  completing  the game, take the ticket to Shizune. She will give
you the 2nd Hokage's Blade.

Silver Blade Ticket: C, F, J, H, I, L, E, G: Get the Silver Blade Ticket


Konohamaru Password
     When entering the school, talk to Konohamaru. He is on the ground
floor  between the Mission and Challenges doors. Entering the password
gives   you  a  character  item.  These  character  items  unlock  the
character, but it can only be used after you have beaten the game.

D K F I A B J L: Unlocks Gaara
I K A G D E F L: Unlocks Gai
J G D L K A I B: Unlocks Iruka
G B E I D A L F: Unlocks Itachi Uchiha
E B J D A G F L: Unlocks Jiraiya
A L J K B E D G: Unlocks Kankuro
G J H L B F D E: Unlocks Kyuubi Naruto
A H F B L E J G: Unlocks Orochimaru
H F I C L K B G: Unlocks Temari
C G H A J B E L: Unlocks The Third Hokage

Unlock Characters in Wi-Fi Mode
     Some  Characters  you  unlock  By  Either Winning matches,Getting
wi-fi points,or by getting Regional cards:

Haku: Get 10 regional cards
Jiraiya: Play 10 rounds(doesn't matter win or lose)
Nine-Tailed Naruto (OTK): Get 100 Wi-fi points
Sasuke: Win at least 1 wi-fi match then talk to the guy next to Anko
Sasuke Second-State: Get 30 regional cards
Tsunade: Play 20 rounds(doesn't matter win or lose)