When Jormungandr, Fafnir, and Ouroboros heard Vlad's intention regarding the demon's soul, their eyes widened, and concerned frowns emerged on their faces.
The Sky Seed Depravitas knew Demon Soul Hunter was an extraordinarily powerful Strength System that required sealing a demon's soul inside a Demon Cage Runic Formation embedded in the user's chest, right above the heart.
Doing so would enhance the user's power, energy capacity, and natural talent, using the demon's soul to constantly nurture body and spirit. Unfortunately, the process was not without a severe drawback. Handling a foreign soul inherently posed the risk of soul backlash; the user's own soul had to be robust enough to resist the demon's power.
