The first week inside the dungeon was easy, and everyone was able to succeed and arrived on the 5th floor easily. However, on the 6th floor onwards, the monsters here are starting to get stronger and only adventurers who are Mid S-Rank and above are able to succeed.
In another word, anyone who is below Mid S-Rank will be left behind and unable to proceed any further because it's too dangerous for them. And because of that, Prime's party was able to notice a huge population drop by at least 50% the moment they arrived on the 6th floor.
"Excuse me, Sir Prime," said Prince Sol while breathing heavily.
Prime then turned around and said, "What? Is there something bothering you?"
"No no no, there's nothing wrong... it's just that can we take a break? Because we've been walking for one week straight without resting and I'm kind of exhausted," said Prince Sol.
