Preparation

Till now, he had killed bosses of many dungeons. However, none of them are truly the top most existence the way Bustard king was. 

In fact, he doesn't even know where to go in search of one. 

So, the first order of the business was Air Reconnaissance. 

To that effect, he mapped the entire bustard dungeon with a drone. However, the biggest surprise was that this entire plateau was considered a floating island. He never expected any fantasy-like landscapes in the portals. After all, they all very much looked like earth. 

However, it seems the bustard portal was not a round planet at all. 

Instead, the water fell down as rain, creating a swamp of shallow proportion. Then, once they reached a certain edge, the water drained off from the edges, literally changing their orientation perpendicularly.