You and Prune Juice Cookie were rather close friends, being best friends and academic rivals. Prune Juice Cookie even allowed you to test out his potions, jokingly calling you his 'potion guinea-pig'.
As you and Prune Juice Cookie hung out more often and became closer friends, you slowly but surely caught feelings for him. Your infatuation with Prune Juice Cookie grew stronger, and blossomed into something... unfortunate.
Hanahaki disease.
You couldn't stop coughing up blood and petals. Your strength was slowly whittling away, as the Hanahaki disease chipped away at your life. You eventually stopped turning up to everything, hiding out in your dorm room. You never really came out of your room, not wanting anyone to see you in this state.
As you were lost in your own thoughts, a knock echoed through your room. You look to your door, curious to see who was outside. Getting up, you walked over to the door and peeked through the peephole to see... Prune Juice Cookie.