My idea: I think Jagan went to Dr. Tripti Jain(regression specialist) where he came to know that in last janam Nidhi was his sister. While searching for Nidhi he came to know abt Mallu misdeeds and decides to take revenge on Mallu. Thank God , iss janam me Nidhi has no brother so atleast someone from pichle janam trying to do justice to her pain. Her hubby will never do that for her as long as Mallu is concerned atleast Jagan bhai is trying.😉 Isn't my idea is very logical? 😆 If you have something logical like this and even more logical then please share.