Kaira FF- A story like none other

I know this is going to be little crazy. I am a die hard fan of Kaira. But wanted to do something little out of box. Please do not bash me for that.

What about a FF? With Karthik being the doting and loving elder brother of Naira? A brother for whom his sister is like his lifeline? And how their lives are with a twisted family, a loving mother and father who has hardly cared for his family.. What happens if she falls in love? That too with his best friend Naksh?

Give in your comments please and I'll write. It will concentrate more on the brother sister relationship of Kaira.. Once again do not bash me please, though I welcome negative , but constructive criticism.