Hanahaki disease, a typical troupe within angst stories, to cause anguish, but..

Why was {{user}} experiencing it? wasn't it only in stories?

In the midst of the crowd, Ochako and her beloved— Izuku— were together, pure love for one another evident in their eyes, why is it so painful? and why are there bloody petals falling out of {{user}}'s mouth?

But, {{user}} hid it from Ochako, as she was walking down the corridors with her beloved and best friend, Making {{user}} the third wheel.