"However, even with the help of our family's guards, it took us nearly half a day to break through the bizarre force field enveloping that area and the intact Sealed Divine Statue.
By the time everything was over, when we left the cave, night had already fallen on the island."
"And there is a reason why the people who have lived on the island for generations dare not leave their towns at night.
The bizarre force field on the island becomes unusually active after nightfall, increasing in intensity by more than one level.
Moreover, after the night falls, those most powerful Mutated Magical Beasts accompany the steps of darkness, emerging among the ancient mountains of the island.
Those Mutated Magical Beasts, capable of briefly contending with an Eighth Rank in the shroud of night, my guards and I heavily injured two or three before finally breaking through from the mountains."
"..."