The system had previously given him the answer about that potion.
This was also something that had always puzzled Lynn. If Night Doctors sought to heal, why did they cut their patients apart and stitch them back together?
The Bound Angel regained her composure and parted her lips.
"It seems you've already discovered it. Yes, that was indeed the work of our Night Doctors. It's also a skill every Night Doctor must learn, and one of the biggest reasons people misunderstand us."
Confusion appeared in Lynn's eyes.
The Bound Angel raised her head and closed her eyes. "It all comes down to curses."
"Curses are like diseases in the mortal world. They run rampant throughout the Dark World. You might find a way to break an ordinary curse, but for most curses, once they latch onto you, you're trapped in an almost inescapable death sentence."
"Especially here in the Dark World, our ability to break curses falls far behind the speed at which they evolve and spawn new variants. Even the exact same curse can manifest in entirely different ways in two different individuals."
"And precisely because of that, during the first thousand years after the Night Doctors were founded, we lost countless doctors to the spread of various curses."
Lynn's expression grew grave. "Was that potion the solution you developed?"
The Bound Angel drew a deep breath and closed her eyes.
"Yes. To combat the countless varieties of curses in this Dark World, we spent a very long time developing that specialized medicine."
"But because of this world's peculiar nature and my own abnormal condition, oral doses and injections can only suppress curses for a short time. As time passes and the medicine loses its potency, the curse revives again."
She opened her golden eyes.
"So, after several rounds