"Fair enough." Neji didn't stop walking forward, eyeing the bird-thing to see if it was going to attack. Whatever the mark was, it was damaging his body, and on top of that... if he remembered correctly, the other had been passed out before fully awakening that dark Chakra. At the time, he had assumed it to be due to wounds sustained in the Forest itself, but now?

A beat as he studies the other's tenketsu, finding the ones connecting directly to that mark. Chakra was pulsing from it rather than from the center as it should. If he shut that down... well, who could say whether it would make it worse or better?

His eyes flick to the bird-thing. "If you really are a ninja animal, hold him still," is all he says as warning, then his right hand snaps out, index and middle finger extended and braced by his thumb as he forces his own Chakra into one of the primary tenketsu affected by the mark, overloading the amount passing through it and forcing it to shut down to prevent further damage.