Upcoming Twist in Yeh Hai Mohabbatein

Raman plans to reunite brother and sister, Mihir and Shagun. Raman feels Shagun is changed and she should get another chance. Soon Shagun will also get another chance with Ruhi and Adi also. It seems like Shagun is slowly and gradually once again coming back to Bhalla house. Ishita is tensed with Shagun coming back to everyone's life. Will Shagun replace Ishita in everyone's heart?