Even the Demon Realm outside sensed the commotion within the Nether Emperor Demon Realm.
Demon Flame Supreme strode over with a majestic expression, his gaze like divine flames that incinerated all things.
"Elder Sword, why have you come to wreak havoc in my Demon Realm?!"
The moment Demon Flame Supreme stepped into the Nether Emperor Demon Realm, these words rang out and spread in every direction.
He could sense that the power erupting within the Nether Emperor Demon Realm belonged to Sword Heart Supreme.
This shocked Demon Flame Supreme inwardly. Ever since they emerged from the Dominion Road, there had been no further news of Sword Heart Supreme. Even supreme experts at the tenth heaven of the Supreme realm like himself and the Devil Ancestor had no idea what Sword Heart Supreme had been doing.
Yet Demon Flame Supreme suddenly discovered that terrifying power had erupted within the Nether Emperor Demon Realm, completely identical to Sword Heart Supreme's power!
How could Demon Flame Supreme possibly remain still after that? He immediately rushed over.
He had some conflicts with his master, the Nether Emperor Demon, and had not visited him in the Nether Emperor Demon Realm for many years.
Previously, he had sent Mu Qing and the others to the Nether Emperor Demon Realm because he wanted to use his master's hand to kill them.
However, Demon Flame Supreme likely never imagined that the Nether Emperor Demon, a member of the Demon Race, would suddenly become curious about the outside world. He had not killed Mu Qing at once, ultimately allowing Mu Qing to crush the sword light.
"Demon Flame?"
"Your strength..."
The Nether Emperor Demon stared wide-eyed at Demon Flame Supreme. Sensing the terrifying aura emanating from him, he swallowed hard, his face filled with horror.
As Demon Flame Supreme's