Well got to admit that Neji and Chouji was great during their battle, because the sound ninja's that they were fighting with was at level: Jounin probably it says on
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Though it dosen't need to be true, but i also think that they were at jounin or greatly Chuunin's specially when they are at cursed seal level 2... maybe sound has a different shinobi rank system.. what do you think?