Dark Mystery King pondered. "He can't leave Reincarnation City."
Nether River King said, "Within Reincarnation City, even someone with strength comparable to Heaven's End King couldn't possibly kill him."
Dark Mystery King said, "Then he must have gone into hiding. But why?"
After thinking for a long while, Nether River King said, "There's only one possibility. He refined the Eternal Divine Crystal into a protective treasure, so he could break free of Heaven's End King's control."
Dark Mystery King said, "Exactly. But where could he be hiding?"
As he spoke, he took out a ring. Seeing it, Nether River King also produced a ring. The two rings were identical, even the patterns engraved upon them matching exactly.
The two simultaneously raised their rings. The rings merged into one in midair, releasing a streak of light that flashed through the air before vanishing.
Dark Mystery King and Nether River King froze, crying out in unison, "Impossible!"
After another moment, Dark Mystery King said, "If Nine Yin King has the means to block the Heart-Joining Ring, I'm afraid even Heaven's End King couldn't capture him. And even if he did, Nine Yin King would have long since left Reincarnation City."
Nether River King said, "Could he really be dead?" Though he said so, his tone remained full of disbelief.
After pondering briefly, Dark Mystery King said, "It would be best if the two of us don't separate for a while. If Nine Yin King has hidden himself away to refine a treasure, then once it is complete, he will likely come test it on us. If someone has killed him, then that person's ambitions must run deep, and they will come after you and me as well."
Nether River King said, "Heh..."
But he was an old ghost who had lived for