Underground Demon God (10)

Above the Wailing Well was a group of elders. They were standing everywhere, with a huge altar in the center of them, as though they were holding an unknown ceremony.

"There shouldn't be anyone still alive. There must be a mistake," the elder holding the golden book said.

"Even though we have collected enough young blood, it is an insult to us for anyone to be left alive. We have to make sure that they do not get out no matter what," one of the elders said coldly.

"It doesn't matter. Now that we have collected enough young blood, we can close the exit. Let's close it first then we can speak more," the elder holding the golden book said.

...

At that moment, near the Ice Ocean, the big yellow dog was wagging its tail and looking up at the sky. After a long while, it said, "What are those old men doing? They even have an altar there and are muttering something."

As soon as the big yellow dog said that, everyone froze.