Why is Kartik disappointed with Naira?

Star Plus' Yeh Rishta Kya Kehlata Hai has been topping the TRP charts from the time Naira (Shivangi Joshi) confessed her love for Kartik (Mohsin Khan). The show was also in the news for the show's backbone Akshara aka Hina Khan finally quitting. 

The track will now commence towards the alliance of Kartik and Naira and the introduction of Kartik's family. During a few interactions with Kartik's family, Naira will come to know that Kartik shares a strained relationship with his father. To get to their depth and sort the 'issues', Naira will reach out to Kartik's father.

When Kartik will get to know of this, he will get angry on his ladylove and they will get into a fight. Kartik will be disappointed and upset with Naira. Naira will then get to know that it is not dislike that Kartik has for his father, but deep hatred.

Kartik feels that his father has killed his real mother to get married again and hence, hates his father. And when Naira gets to know of this, she feels bad for having hurt Kartik's sentiments and feelings.

This track will further add more twists and turns to the story line, as it has already been revealed that Kartik's family will reject Naira.