Level 100 is the max unless they Limit Break.
If they limit break then it will say "100" instead of "MAX". To Limit Break, you have to do the Trials missions, and 6*'s will need their character crystals, and 4* scrolls mainly(some 3* but not much)
I have zabuza i got from the mist demon and i already awaken him to level 5... and now i trying to awaken him to level 6 but it wont let me.... and also i have 10 of his sword plsss help
i think there are bigger issues than 6 star Shinobis like the fact one pear is $1.49 for 50 dollars you should get at least 4 multi summon not one and the problem with purchases I cant buy pearls on my android I keep getting cant verify google account this needs t6o be fixed badly