no I dont think vyom will take so much risk of bringing kk coz if he thought shivani is sharanya won't she be attracted 2wards kk? the same what happened with sharanya.then he will be making same mistake .I feel either rebirth or there is a guy akashFew articles say that Akash is vyom. So shadow could be him.
The reason why he brings kk could be...he might want to prove that he can win sharanya's love ...but seeing Radhika he first time got angry on Shivani...and he also knows about secret door of Bedi house. Plus rajvi weren't much puzzled seeing him for the first time with Shivani...and Shivani also felt weird touch in the absence of Akash only...further in the first meet of Krish and Akash, Krish had got zatkaSo there are chances that we might get to know that both are same and there's neither reincarnation nor look-alike of vyoom but it's him only