Shortly after Baek Mu-Gun arrived at the Heavenly Underground Cave’s entrance, the warriors of the Great Huangfu Family entered. They couldn’t help but be surprised when they saw the interior of the Heavenly Underground Cave, which was akin to a separate world.

For a while, Huangfu Ming was the same. He then smiled triumphantly as he spotted Mu-Gun, wearing a black mask and standing not too far away.

“It’s great to see you again.”

“I’ll give you a chance,” Mu-Gun said underneath his mask.

“A chance?”

“Turn around and leave.”

“Or what?”

“Or a year from today will be the death anniversary of you all.”

“Kuhaha! Such empty bravado for someone who can’t even show his face in fear of his identity being revealed.” Huangfu Ming taunted Mu-Gun.

“Think carefully. If you don’t leave now, you won’t be able to get out alive.”

“Is that so? I think you should be the one worrying about your life.”

“I definitely gave you a chance, but you all chose to turn it down. Don’t resent me for what’s to come.”

Mu-Gun didn’t have any intention of allowing the Great Huangfu Family’s warriors to leave so easily in the first place. Nevertheless, he gave them the opportunity as a form of formality so that he could justify the actions he was about to take, even if just for a little bit.

Without a hint of hesitation, Mu-Gun recited the incantation to invoke the Thunder God’s Descent.

[O’ God of Thunder shining brightly in gold. Adhering to the ancient covenant, I long for your power. Manifest your existence and show your domineering power to these foolish ingrates!]

The words flowing out of Mu-Gun were the long-forgotten Language...