Hanahaki Disease is a disease in which the victim coughs up flower petals when they suffer from one-sided love or when they believe their feelings are not returned. It ends when the beloved returns their romantic feelings, find out if their beloved likes them back, or when the victim dies. It can be cured through surgical removal, but when the infection is removed, the victim's romantic feelings for their love also disappear. In worse cases, they will also forget them.