The Search For A Leader.
Once Sebastian deduced the truth, he felt like hitting his head against a wall.
A well-known fact in the outside world was that Leviathons were solitary beasts. They were not social with other beasts, and due to their small numbers, they were scattered all over Oceania which meant that 2 Leviathons rarely met.
Over the decades, as this trend continued, this became a fact that even the Leviathons themselves accepted, they embraced the solitary lifestyle.
They adapted to stop relying on others, they lived their whole lives with the belief that they had no friends to take care of them, they were for themselves.
This was one of the main reasons why despite the intimidating might of the Leviathons, there was no Leviathon Beast Empire. These species of Space Beasts were just not unified enough to form an Empire of their own.
This belief in solidarity and self-reliance rippled into the Domain World.