I'm new and need some books w/ Hanahaki disease plot or smth similar :) (No fanfics pls)

[Dorothy:]

I need some books with the plot or something similar to the Hanahaki disease plot. (One sided love disease or flower sickness)

Where one character is in love with someone but it's one sided therefore flowers begin to bloom in their lungs, slowly killing them unless the person they fancy returns their feelings.

Good or bad ending appreciated