Every Rose Has Its Thorn

Part 1: Overview and Prologue

(If I am missing anything else for the overview please tell me! OwO)

Overview:

Hanahaki: hana(flower) hakimasu(to throw up)

Description: Hanahaki is a fictional disease that occurs from unrequited love, making the infected person vomit petals along with blood. In the later stages, a person will be found throwing up entire flowers. These flowers bloom in the lungs to create the recognizable symptoms found in hanahaki, and it takes months or up to a year for it to develop.

Ways to stop the disease:

Surgery: By getting the surgery, the flowers will be removed, but so will the feelings of love for the receiving person. In some cases, the person can no longer love at all, or they will lose the memories of the person they once loved.
Returned Love: As being the cause of the disease, if love can be returned by the other person, the disease will be stopped. The love must be genuine for the hanahaki to die down. The remaining flowers will be coughed up and the remains of the disease will dissipate within a week or two.
Death: Most characters cannot bear the thought of getting the surgery since it means losing your feelings for the other person, or worse. Since these characters assume the love is unrequited, they are only left with the tragic option to die.

Things that make the disease worse:

Failed Confession: If you confess to your crush and they do not like you back, it will not only make the hanahaki worse but leave you with only the option of getting the surgery or dying from the disease.
Being Around Your Crush: Being around your crush can make the disease worse (I'm not sure what the circumstances are but I'm pretty sure it's when the person thinks about how they can't have them or if they are thinking about the person romantically)

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Prologue:

I just want you to be happy,
Even if it means giving all of my blood and tears.
I just want to be happy,
But I'd rather you be happy than to hold me dear.

I just want you to be happy,
But if I hold back then I would have nothing to fear.
I just want to be happy,
But we're fated to be apart and that's very clear.

I just want you to be happy,
Even if it means I'm merely a friend or a peer.
I just want to be happy,
But I'll watch from afar until I'm no longer here.

Petals and thorns. I have learned to see it all as pain. Isn't it wonderful to think about when you'll die? Isn't it wonderful to know that the person you love will never love you back? Isn't it wonderful to throw up petals and thorns all the time? It is wonderful, isn't it? I could choke on petals any minute. I can feel the thorns pricking the insides of my throat, down to my tongue when I throw them up. 

Oh, Kacchan, why did you have to love roses the most? Maybe it was because they were deep red like your eyes, or there is something about the thorns that triggers your sadistic side. Do you even have a sadistic side? Maybe it's because the roses are just absolutely beautiful. Whatever the reason, I don't blame you. I blame myself for loving something I can't have. 

Love is made of pain,
and beauty is too.
Drowning mentally,
In the ocean blue.

Intoxicating petals,
I learned about their taste.
I throw up roots and thorns,
With uncomfortable haste.

Unrequited love,
Just like a tragic tale.
I only blame myself,
Alone at sea, I sail.

And now alone I slowly die,
From a love that I have sworn.
And now I'm hurt down deep inside,
...

...Every Rose Has Its Thorn