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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.
by Friggin_Author_Chan November 12, 2018
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2
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!
by user789456123 April 05, 2017
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3
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.
by jreamie October 12, 2020
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4
Hanahaki disease, AKA flower disease, is a fictional (emphasis on fictional) disease common in anime. It is a disease caused by one sided love, where the patient coughs up flowers and flower petals
"She suffered from Hanahaki disease after falling for someone who's heart belonged to someone else"
by abracalicious January 16, 2020
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5
Hanahaki disease is a fictional sickness where a victim of unrequited love or one sided love will have a plant growing inside their lungs. Symptoms of said illness will result in said victim coughing up blood and flowers or flower petals. The disease can only be cured if the two form a mutual love or a two sided love or if said victim undergoes surgery to remove the plant. Losing the plant means you can lose your affection or ability to love the person that you adored at one point. It is commonly used in anime fanfiction
Well Hanahaki Disease is fictional so there aren't really any examples
by Abi_GachaWolf June 28, 2020
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A fiction character that suffers from one sided love. Someone who loves a person but that person does not love them in return. They choke and cough up flower petals.
She coughed up petals because she has Hanahaki Disease.
by Izzy24 October 01, 2018
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7
The Hanahaki disease is a fictional disease that makes you throw up flowers or flower petals. There is no chosen flower type, it only depends on the victim's favorite color or type of flower. It starts with someone loving another person but, The other person already loves someone. Then the victim starts to throw up, the victim expecting barf, but no. It's flower petals or flowers. The flowers and petals stay in the victim's lungs until the crush says they love them. But if the crush does not say they love the victim in time, The victims lungs will fill up with more flowers and petals until they suffocate and die.
I ran home. Covering my mouth, I unlocked the door and tried to run to the upstairs bathroom. But I started coughing a lot. I knew I had to clean my barf up. I opened my mouth and closed my eyes. I felt something touching my hands lightly. I opened my eyes and noticed it was a single flower and flower petal swirling in my blood. This was the fifth time this month. The Hanahaki Disease... I suddenly dropped to the floor and started choking. There was no one in the house. I felt my lungs filling up with flowers and flower petals. My vision got blurry and I had a vision of my crush. 'heh, who said love couldn't kill?' I said slightly. My eyes closed slowly. 'I love you.' I whispered slightly.
by DoggiePotato_ 915 January 11, 2021
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