1. Munna came face to face many times with Megha, but Megha ki ghenti kabhi nahi baji that it was her son Addu. We blamed Megha many times for that also in our many posts. CVs wont make such a mistake.
2. Munna was never totally soft towards Megha. He hates her also along with Mohan. This is not expected from a real son. A son always has a soft corner for his mother and she was always in support of Addu that she accepted in front of Mohan in that PIM hotel room. In that case Addu cant hate Megha.
3. The way this new entrant is shown, it looks like he is Addu.
One more point that I forgot to add originally:
4. Addu will never do whtever Munna is doing. He will never go that wrong. He killed doctor, tried to attack Navika, misbehaved with Megha. In short he is a complete criminal. Megha and Mohan's son will never do such a thing. I think he refused to do such things and thats why he is in such a bad condition-paralyzed and mentally disturbed becoz of tortures.
But confusing thing is this boy was saying Addu-Addu. Why anyone will call himself? He must be calling somebody else. But the room had Nanhi, Maa written on walls, that only Addu might have written. But whatever it is, I liked the suspense and confusion around Addu.
But one thing I am quiet sure of now is that Munna is not Addu.
What do you think? Whats your say on all this?