Two times. same like S3.
1st time for 2 years I think. Swarna accuses her of Shubham's death. That time Karthik supports Swarna. Naira loses her dancing capability. But she left for Mumbai with her dad and they run a hotel. She joins a college to complete her degree, where Karthik went as a lecturer and they reconcile.
2 nd time 6 years, when Goenka's business was down, She tries to help Goenka's company to come out of debt and do jewelry design, she become more popular than Karthik so Mimi injected doubt in him. when she is working with a famous designer for a client he doubted her character and asked her the wrong question. She got hurt and left with anger.
that same day she came to know that she is pregnant. she went through an accident and her car fell into a pit. she back to tell him the truth. By that time they thought she died in an accident. when the designer try to talk to Karthik he told him he don't want to listen to anything. she will hear those words and go back without meeting anybody.
After 6 years, because of Kairav, they ended up meeting, but he doesn't know that Kv is Naira's son and she is alive. Kairav also has a hole in his heart, and through that came to know. but that same day he got married to Vedika.
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