Nightmare Invasion: I Upgrade My Aerial Fortress

When a mysterious Dream Key crashes into Shao Yuan's world, he's yanked into the Nightmare Realm—a dark dimension where survival hinges on a single crumbling straw hut. But while desperate survivors cling to their meager shelters, Shao Yuan sees opportunity. Portal by portal, resource by resource, he transforms his ramshackle refuge into an impregnable sky fortress. As nightmares close in and others beg for scraps, he's already soaring above the chaos. In a realm where fear rules, only the bold ascend.