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Hanahaki Disease 

The Hanahaki Disease is an illness born from unrequited love, where the patient’s throat will fill up with flower, they will then proceed to throw, and cough up the petals, (sometimes even the flowers). One of the only ways for the disease to ‘disappear’ is if, the said person returns the feeling (it can’t be resolved with friendship, it has to be genuine feelings of love). The infection can also be removed through surgery, though the feelings disappear along with the petals. If they choose nether options, or the feeling is not returned in time, then the patient’s lungs will fill up with flowers, and will eventually suffocate.
There is no specific flower for the disease, but it’ll either be the crushes favourite type of flower, or their favourite colour. We can only hope for the patients, and pray that the crushes favourite flower isn’t a type of rose.

(The length of the disease varies with each person. But on an average, it will last up to 2 or 3 mouths, but sometime it’ll only last, a couple weeks).
~~~Example~~~
The sight was sickening, the body lay limp on the carpet. stained petals, and flowers surrounding them, swirling in a pool of their own blood. I took a deep breath. Then turned to the rest of the group, keeping my head low. 'Who said love couldn't kill?' I let out a low laugh.

"Darn you, Hanahaki Disease," I curse under my breath. Tears threatening to fall.
Related Words

hanakanjō 

Hanakanjō is a syndrome in which flowers start growing out of the victim's body because of a strong emotion.
Maybe they'll grow when you're happy, feel loved or in peace! In that case (good emotions), the flowers will sprout painlessly.
But maybe they'll grow when you're depressed, anxious or deeply missing someone... In that case (bad emotions), the flowers will sprout with a sharp pain.
"I heard she has Hanakanjō ."

"That's rough."

Hanamaru 

A character from anime "Love Live Sunshine". She is cute, brown-haired, while shy but likable girl.

And her clumsiness with technologies is just so cute!

Aka Zuramaru because of her habit saying Zura at the end of every single sentences, as a part of her Japanese dialect from Shizuoka Prefecture.

Although this seems annoying, as you hear "Zura" every time, you will really love her saying "Zura", as she has brainwashing power for all.
Hanamaru: (Seeing automatic hand dryer) Mirai Zura! Mirai Zura, Ruby-chan!
Hanamaru by maru_kunikida October 4, 2017

hanahaki disease 

a fictional (emphasis on fictional) disease, often used in fanfictions, where the victim regurgitates and coughs up flower petals when they suffer from unrequited love. The illness can only be cured through surgical removal, however any existing romantic feelings are also removed with the infection.
the "hanahaki disease" can't really be applied to real life because it's fictional, so no examples for it...sorry!

hanahaki disease 

hanahaki disease, where one who deeply loves another will throw up petals, and maybe the whole flower, but covered in blood. to get rid of this disease is for your lover to return their love to you, and truly mean it. but the second option is too get the surgery, but you will lose all love and feelings for the other. If after a few days you don't confess or get the surgery, you will meet your end.
I had the sudden urge to throw up as I run to the bathroom. I get a metallic feeling in my mouth as I throw up in the sink. With a sore throat I look down, only to notice blood, and small blue sheets of something. With closer examination, I notice they are petals. My eyes widen, only to notice what was going on. My feelings were growing more, dangerously more. Hanahaki disease.
hanahaki disease by jreamie October 12, 2020
One of the cutest people you will ever meet. She is always cracking jokes and is truly hilarious. She is really beautiful, even if she may not believe it. She has the most amazing hair and is the best person to spend your time with. The most huggable and lovable person you'll ever meet. You'll never forget the time you've spent with her.
I love you hanaa.
Hanaa by Ms.white December 11, 2018
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