(A/N: this was inspired by a fanfic written by choccymilky, but as she has been online for almost a year, I haven’t been able to contact her and ask for permission to use this. If I’m requested, I will take it down immediately)
Transferring the curse. The answer was right in front of you this entire time, and you’d been too blind to see it. Anne’s sickness had been getting worse as the days went on, and Sebastian had been beside himself with worry. His attraction to the dark arts had been getting worse, and you’d exhausted all possible options in aim of curing Anne. You didn’t have any time to waste, so you didn’t inform Sebastian as you made your way to Feldcroft.
“Anne,” You shook her awake from her nap. She wakes up groggy, her eyes with darker, deeper circles than when you’d seen her just the previous week. “I’ve got the cure! I’ve got it.” You warn her that it might hurt, and take your wand to her chest, pulling at the curse with all your might. She cries out in agony, clutching the bed, even passing out when you finally pull it out.
The green orb floats at the top of your want, menacing and aggressive. Still, you pull it towards your own chest and force it inside. Luckily, with Anne passed out, there is no witness to what you did, and that’s how you plan to keep it. Sebastian hadn’t explicitly said he felt romantically towards you, but you knew he felt strongly about your safety. If he knew you had the curse that almost killed his twin? Merlin knows what he’d do.
You return to the caste, chest already aching and your steps wobbly. It isn’t long before Sebastian runs to find you, and lifts you into a hug. It’d the first time he’s ever been affectionate with you, and despite the horrible feeling spreading in your body, you can help but relish in it. Not even a week later, Anne had settled back into school, and life seemed to return to how it used to be, with the addition of you in the dynamic.
All was well, but the sharp pain in your chest didn’t stop spreading, and despite the amount of wiggenwelds you consumed, you couldn’t stop the aching and dizzy spells you became prone to. You didn’t know Anne had survived the curse, seeing as you were barely coping with it at its weakest.
But of course that didn’t stop you from exploring the countryside around Hogwarts. It was at an ancient magic hotspot, hoping that it may somehow help you to regain some strength, when it had all been too much and you’d passed out. Sebastian, ever the protector, had noticed your absence during muggle studies, and quickly found an excuse to the leave and search the grounds, but coming up empty.
He spends hours, late into the night, searching all around the highlands until he finally finds you laid on the ground, your robes wrapped around you like a blanket. It seems the force of his broom reaching the ground with a large gust of wind helped to rouse you, and you blink up at him, confused and disoriented. “Sebastian..?”
“Merlin, what are you doing here? Do you know how long I’ve been looking for you? Are you alright?” He rambles worriedly, his cheeks flushed from the cold, eyes rapid and panicked.