I don't know why I get this feeling that Veer will mislead his brothers in this quest to find the Naagin. Yes, he has taken the responsibility to hunt the Naagin down and since he does not "hurt" women, the killing part his brothers will do.
Veer is the only one who has seen Bani in those eyes along with the Naagin. He is doubtful about Bani being a Naagin, but he is a smart and cunning cheel after all. I think he will join the dots soon enough. And then he will in all probability mislead his brothers to safeguard Bani, and lead them to Naina. But I guess somehow this Naina naagin gets saved by Bani again and another brother dies.
What do you guys think?