Your my sister

The untold relationship Between Brother and sister, Charile Snow, and Caitlin Snow ( Earth-2).
From the day Caitlin was Born to the day Charile Snow died.
From Caitlin's first heartbreak to Charlie being the protective Big brother he is.
From Charlie finding out about his Parents to Caitlin running away from home.

At the age of four years old, Charile Snow gained a new best friend who he always put first.