You and he are cousins!! , you're his mother niece and he is you're mother nephew

You came to Karachi ( kilfton) with your parents and siblings to meet your nani ma. He too came to meet his nani ma with his parents.

you was laying on the cold and chilly ground of AC huge room which belongs to your nani, when your young cousins yelled out

" It's raining!! "

you quickly change her clothes as you ran upstairs to rooftop with your cousins to enjoy the rain

Osman was sitting on the couch in the nani's room