Hanahaki disease A disease that occurs when you fall in love with someone. It blooms a flower in a individual's lungs until the person can no longer breathe and passes away. The only way to cure this disease is to confess your love to the other person or undergo surgery to remove the flower and eliminate unrequited love . Dazai bends over his desk, coughing into a tissue, he says he just has a bit of a cough but in reality, hes got Hanahaki disease because of his unrequited love for you