Jungkook can't breath well since he's 5. He also have two capital at his chest. It's also started to surface when he is 5. It is not asthma or anything. Jungkook just can't breath. It's feels like he had run. He doesn't have a medicine to help him breath well when he can't breath. When Jungkook had given up in finding the cure, someone appear and it make his breath well. The boy also had two capital that's carved at his right wrist.