[Since the creation of the Underworld, there have been many Grand Labyrinths, but there has never before been a case when the Labyrinth Core was upgraded independently. It is uncertain how the Grand Labyrinth that has accepted the Naga’s Heart will change, or when its upgrade will be complete.]

[It may take longer than expected, or it may finish tomorrow.]

With a dazzling flash of light, a message appeared with an ominous vibe like never before. It was unlikely, but the message seemed to be telling Kim Jin-Woo that the upgrade might never be finished.

“This is…” Kim Jin-Woo belatedly regretted his choice, considering the possibility that the upgrade might take too long, but the dice had already been cast. Now, he had no choice but to hope for a favorable result.

“Mm?” As he was concentrating on the message in front of him, he suddenly looked up upon feeling a strange sense of incongruity. The atmosphere in the master room, which had been feverish until just a moment prior thanks to the Nagas’ aspirations and expectations, had suddenly dropped to an abnormally cold level.

“Ah.” When he looked up and around the master room, he subconsciously let out a gasp. The...