Tsubanakasu Haru
A florist whose flowers grow on his body. It's a genetic disease. Then there's a mailer who fell at first sight for the florist. The mailer is the kind of guy who's kind and likes to help others, outgoing too. Hmm like an ENFJ. One day the mailer found the florist's secret (body growing on body) by chance, and decided to help him out since. The florist said the doctor said that bodily fluids from other ppl help if the mucous membrane absorb it. So he suggested sex. The mailer complied reluctantly as he thought it should be done between lovers. Anyway, turned out this disease is sexually transmittable. But he got cured and was immune to it now. They later realised it wasn't bodily fluid, but the feeling of love or sth. Like, the flowers came when the host got extremely depressed (which the florist did when his parents died..)
The Man in the Mirror