Daehyun falls in love for a living. Youngjae wishes Daehyun would stop coughing up flowers to get by.  HANAHAKI DISEASE / 花吐き病The Hanahaki Disease is an illness born from one-sided love, where the patient throws up and coughs up flower petals when they suffer from unrequited love. The infection can be removed through surgery, but the feelings disappear along with the petals.