Waiting
After regrouping with Dona and having a great time with both the demoness and Yuri, Mark flew back towards the mega-dungeon. He carried Yuri under his left arm, while he tucked Dona under his right hand—then bolted through the skies.
While, tucked in Yuri's arm was the hamster, nibbling on a nut.
By the time he saw the dungeon's barrier, the moon loomed in the skies, and night had arrived. He passed the barrier and flitted past while looking down at the ruins below. The world within the dungeon was mostly ruins of once-great cities.
Demonlings and Lower Demons were brutal creatures with destruction in their blood, when a place was packed with such creatures, buildings were going to crumble, roads were going to be broken, and everything else was going to become dysfunctional.
And just like the ruined city below him, the entire Hunter World was going to be covered by the mega-dungeon. He planned to do that!