Dying to Love You (Kiribaku Hanahaki)

Kirishima knew it was only a matter of time before he contracted Hanahaki. He's been in love with a certain explosive blonde for almost a year now, and when he hears of a certain flower spitting disease that affects those that are in an unrequited love... he knows he doesn't have much time left. His parents take him to the doctor and he's told what he already knows: he can ride out the disease and die within the next year or have a surgery that effectively removes the flower in his lungs but also effectively removes the feeling of love. Confessing can cure the disease if the other person shares his feelings, but rejection can kill him.