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The Era of Dungeon Conquest has finally arrived.
    The Seven Deadly Dungeons of Evil.
    These are the strongest seven dungeons, considered virtually impossible to conquer, even more challenging than S-class dungeons.
    Among them, the most notorious is the ‘Ancient Core,’ deep within which lives the worst boss monster in history.
    ‘Isn’t it your duty to prevent them from reaching my room?!’
    Even though I’m already doing nothing, I want to do nothing even more intensely!
    This is the struggle of a boss monster who just wants to rest in peace!