He was ill, but at the same time, he's taking care of his sibblings.  

He lived with his grandpa since ever his parents abounded him because of his weak body and strong brain damage that caused him to stop learning and going to school like a normal kid, the doctor told his grandpa that the damage grow bigger when the boy grow up and it needs lots of money to do a surgery. So what will jeonghan gonna do from no on?!   

There's no denying it; We're all going to die. But.. For Joohyun, however, that fact seems to becoming true much earlier than anyone had expected. Diagnosed with Leukemia the year she turned 18..