Casey faces fear as the Enlightenment Rite begins, a crucial test to summon the strongest spirit beast and claim the title of Sovereign of All Spirits. Suspicion arises when Melly insists Casey’s chosen companion, a black snake, is unreliable and taunts Casey over past mistakes. As the ritual starts, Melly summons the deadly Nightmare Beast to attack Casey, revealing a bitter grudge from their last life. Determined to survive, Casey counters by evolving her beast's bloodline. The episode ends on a tense standoff, with Casey ready to fight back against Melly’s deadly challenge.