The World After the Fall, Vol. 6 (manga)

Despite all the setbacks, preparations for Jaehwan’s Abyss Expedition are finally complete! But before they can set out, they must raid the Recovery Palace to prevent an invasion from the Great Realm during their absence. Though Jaehwan’s group has trained for this moment, they find themselves facing enemies far beyond what they could have imagined. And to make matters worse, there’s a dream demon working with the opposition…