Looking at the new promo and how the story is shaping up, could it be that the CVs are misleading us that Sesha is vengeful naagin and Mouni her accomplice, while it could be the other way round? Maybe it is Shivanya who is the one with a vengeance and Sesha is her partner in crime.
Sesha could be a decoy planted by EK to make us think she is the main antagonist.
What say?