It's possible that kainaz and seher are siblings. Their story could be about growing up in a big family. They might have had to share everything from toys to parental attention. There could have been times of jealousy and arguments, but also moments of deep love and protection for each other as they faced challenges together in their family life.
Maybe kainaz and seher are colleagues in a workplace. They started off not getting along very well, perhaps due to differences in work styles. But as they were assigned to work on a big project together, they gradually learned to understand and respect each other. Their real story could be about this transformation in their relationship at work.