- 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 one-sided love. The infection can be removed through surgery, but the feelings disappear along with the petals. - kaminari fell deeply in love with sero, but wishes he never did. - ( part two : it returns ) - no characters in this story belong to me, and i do not claim them as my own. i am only a fan.