Science !
The new villain should able to produce device that gives out Aura to halt the chakra flow and render any chakra user become useless. Just like sea stone in One Piece, glowing tattoo in Naruto should able to do the same to ninja.
The new villain should able to produce device that gives out Aura to halt the chakra flow and render any chakra user become useless. Just like sea stone in One Piece, glowing tattoo in Naruto should able to do the same to ninja.

