Forbidden Love (TXT Choi Subin)

I've always been sick. Since I was born actually. The doctors didn't know what was wrong with me. I was home every day, until one day I saw this guy walking across my lon.
I know. It's seems strange. But when he took his hand I was ready to go outside again. And then I fell for him but, he was the great enemy from my family.
How could he and I get along?