Abduction!
After making sure that everything was in order in the Raging Fire military base, Sebastian finally left with his entourage of Leviathons.
All the Leviathons were motivated after the plans of their leader were relayed to them, all of them were enthusiastic to make the dream Ocean King a reality, and they were determined to realize the dream of the Leviathon Empire.
With over a thousand Leviathons being on the move again, there was no way that they could not attract attention, theirs was a dramatic movement.
Due to the ongoing world war, the beasts in the Dungeon of Souls became reduced as each clash between the battling Empires resulted in millions of lives being lost which gradually reduced the number of beasts.
The ones that survived the massive onslaught were the stronger, smarter, and more cunny ones who knew their way around and could fight for their survival.