Ten trading port islands were scattered in a circle across the Kronos Kingdom's Northern Sea.
Nearly a hundred kilometers separated each island from the next. Even by ship, the journey took two or three hours.
For the Kronos Kingdom's warships, however, it took only half an hour.
This was a world where ships could make right-angle turns and swerve rapidly from side to side, much like cars.
Seemingly ordinary pirate ships incorporated all sorts of unusual technology.
These technologies had developed on the seas over a thousand years. In a sense, the struggle between the Marines and pirates had also driven technological progress.
For the vast majority of pirates and people around the world, ships were the most advanced technology they ever encountered.
Yes, ships counted as high technology—at least in Hades's understanding.
In his previous life, many of these maneuvers would have been impossible, completely defying Newtonian physics.
At the center of these waters stood an Army Fortress.
Across the spacious training grounds, Army soldiers sparred with one another, while others worked out in corners or dedicated training rooms.
At the center of the training grounds stood a black, cage-like structure. The seemingly sealed space shook constantly.
Thud! Thud!
Violent crashing sounds kept reverberating from inside the black building.
Perhaps the force was simply too terrifying; even the ground outside the training grounds trembled incessantly.
This was a Gravity Room. The commotion caused by the person training inside was so intense that it affected the other buildings, which was why the Gravity Room had been moved outside.
After a long while, the Gravity Room gradually grew quiet.
Its sealed door slowly opened, releasing thick white mist.
A tall, powerfully built figure emerged through the swirling vapor.
Thick blond hair hung down his back. His upper body was bare, revealing