Kael's darkness consumed him, shattering his bonds with Eli and Aethon. The once-unbreakable ties of loyalty and friendship now lay in tatters.
"Niamh, stop!" Eli cried, her heart breaking as she beheld Kael's transformation.
Niamh's laughter echoed through the dark realm, a haunting melody that seemed to delight in Kael's downfall.
Aethon's sword flashed, determined to save his brother from Niamh's grasp.
Kael's eyes gleamed with malevolence, his gaze now foreign and cold. "You're no longer my brothers," he spat.
Eli's tears fell like rain, mourning the loss of the Kael she once knew. "Kael, remember our oath," she pleaded.
Kael's voice hardened, his words cutting deep. "I've no oath but to Niamh."
Arianna's voice whispered caution. "Eli, we must retreat. Niamh's power grows by the minute."
Eli nodded, her heart heavy with grief. "We'll regroup and find another way to save Kael."
As they withdrew from the dark realm, Niamh's triumph resonated.
"Kael, my love," Niamh whispered, her voice dripping with malice, "together we'll rule the realms."
Kael's darkness deepened, his loyalty irreparably fractured.
In the shadows, a figure watched, intrigued by Kael's fall.
"Perhaps," the figure mused, "Kael's darkness holds the key to our victory."