(Hanahaki disease Mukuro X Sayaka)

The hanahaki disease, a disease caused by one sided love. When someone has the Hanahaki disease, they fell inlove with someone who doesn't love them back, flowers will grow in their lungs slowly making them cough blood and flowers and make it harder to breathe until the person they love loves them badly or until the disease kills them. Mukuro sadly got the disease, she fell inlove with the pop sensation Sayaka Maizono