As the skill activated, both their bodies were completely covered in suits of energy armor woven from crimson red and deep darkness.
This was the Ultimate Eternal Night Form, recondensed from the origin powers of the Dark Sacred Dragon and the Dark Fire Phoenix.
Dragon scales and phoenix feathers intertwined across the armor, shimmering with flowing light. Every pattern represented the power of ultimate darkness, and every circulation of energy seemed capable of devouring all surrounding light.
When the two separated, they transformed into twin sovereigns within eternal night.
One wielded an ice sword born from ultimate darkness and the power of the Water Dragon King's dragon bones. Wherever its blade pointed, chilling cold froze space itself, and all things would fall silent within that endless dark frost.
The other controlled a fire sword born from dark phoenix flames and the power of the Fire Dragon King's dragon bones. Black flames danced across its edge, and wherever it passed, even the air was burned away, leaving only eternal annihilation.
Ice and fire should have repelled one another, yet beneath the power of Eternal Night's Sorrow, they formed the most perfect cycle.
One sword sealed heaven and earth; the other burned all things to ash.
And when their powers fused completely, the truly terrifying scene would descend.
Centered on them, boundless darkness finally began to spread. Light was gradually devoured, and heaven and earth sank completely into eternal night.
This was the Eternal Night Domain they had created together!
Within the domain, their minds, wills, and powers were fully connected. They needed no words; a single glance was enough to understand each other's thoughts. They needed no coordination; a single movement was enough to complete the most perfect transition between attack and defense.
Here, they were not two combatants, but one