The unknown

A Girl Who is love is rejected by the one she cares the most for and falls into depression as she is sinking deeper and deeper she is rushed to the hospital.

Hanahaki Disease (花吐き病 (Japanese); 하나하키병 (Korean); 花吐病 (Chinese)) is a fictional disease where the victim of unrequited or one-sided love begins to vomit or cough up the petals and flowers of a flowering plant growing in their lungs, which will eventually grow large enough to render breathing impossible if left untreated. There is no set time for how long this disease lasts but it may last from 2 weeks to 3 months, in rare cases up to 18 months, until the victim dies unless the feelings are returned or the plants are surgically removed.[5] There is also no set flower that blossoms in the lungs but it may be the enamoured's favourite flower or favourite colour.[6] Hanahaki can be cured through surgical removal of the plants' roots, but this excision also has the effect of removing the patient's capacity for romantic love. It may also erase the patient's feelings for and memories of the enamoured. It can also be cured by the reciprocation of the victim's feelings. These feelings cannot be feelings of friendship but must be feelings of genuine love. The victim may also develop Hanahaki Disease if they believe the love to be one-sided but once the enamoured returns the feelings, they will be cured.[7] In some literature, other symptoms can be fever, uncontrollable shaking, loss of appetite, low body temperature, and hallucinations. Even after curing, with or without surgery, there can be irreversible damage to the lungs and, although very rare, in some cases the disease cannot be cured.
Some people mistake this disease with Sporotrichosis(rose gardener's disease). Sporotrichosis is a real disease which is caused by Sporothrix fungus. In sporotrichosis red, pink, or purple bump appear in the affected area(usually in the skin, in case of cutaneous infection). Hanahaki disease and sporotrichos