Episod 9 - The Saintess's Dragon-Slaying Game

Sacrificed to the ruthless black dragon lord Sarkas to save the dying Tree of Life, elven saint Aria seeks to slay him, only to spark a rare soulbond. As she searches for the eternal source, she uncovers the bitter truth: her fiancé Lion and the elven elders are the real monsters. Betrayed by her kin, Aria turns dark, abandoning her sacred title to fight alongside Sarkas.