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We entered the first of the two Dungeons at long last, this was the Rank 1 Dungeon and the place where the people of the sect got most of their food. It was a dungeon named "Little Spring Sanctuary", which was composed of 10 floors, each floor had few lots of grasslands, a few trees, and rivers and lakes.
They were mostly bright at day, but for some reason as the mana of the dungeon was drained, the artificial sun that it creates to illuminate the dungeon had gone off and it was not working properly, completely ending up in making the place as dark as it can get. There wasn't even any moonlight or something, and the usually invisible walls were now visible, making the entire place an eerily wide room filled with creepy darkness and pure silence.
Check "The Protagnist's Sister Is Actually the Strongest"!