Cassius's dimly glowing eyes sparked slightly before he returned to glancing over his System Notifications.
[Your 'Mythic Phoenix Bloodline (EX)' has progressed to 37.8% proficiency rate!]
[Growth Weapon 'Devil Blade Lilith' has advanced from the 'SS++' Rank to the 'SS+++' Rank!]
|Lilith's Attack +70,000|
[Slayer Weapon 'Mora, Rivers of Blood' has advanced by leaps and bounds, going from 'Middle-Rank 3' → 'Peak-Rank 3']
Slayer Weapons—much like how a Slayer advanced—did so by absorbing essence. In this case, it was Blood Essence. With it, they could progress down a path that was essentially a one-to-one copy of a Nightmare's progression path.
Nightmares—oddly enough—devoured each other and other living beings to become stronger. They, too, absorbed Blood Essence. This created a strange, almost synchronized cycle between Man, Slayer Weapon, and Nightmare. Each one was, in some way or another, intrinsically connected to the others.
OOOM…
