(ᶠᵒʳ ᵖᵉᵒᵖˡᵉ ʷʰᵒ ᵈᵒⁿ'ᵗ ʷʰᵃᵗ ⁱᵗ ⁱˢ)
Hanahaki Disease is a fictional disease in which the victim coughs up flower petals when they suffer from one-sided love. It ends when the beloved returns their feelings (romantic love only; strong friendship is not enough), or when the victim dies.

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The pinkette walked around keeping his usual demeanor, but (y/c) could tell something was up. Kazuichi headed back to his cottage, with you following close behind. before he could open the door he had a coughing fit, he coughed up petals with tiny drops of blood on them. The male covered his mouth loudly coughing while you watched horrified. Kazuichi glanced back making eye contact with you, his expression changing swiftly. "H-how long where you watching? " He asked with petals in his hand and blood dripping from his mouth.