(Heartfelt thanks to 'Yuyi', 'HJAkeno', and 'Wufeng Haotian' for the rewards!)
In the past, before the Loki Familia and Freyja Familia had risen to prominence, Orario had likewise possessed two most powerful familias known as the Twin Kings, reigning over the pinnacle of the entire Dungeon City.
Those two familias were called the Zeus Familia and the Hera Familia.
Among them, the Zeus Familia had made exploring the Dungeon its primary occupation. Like the Loki Familia, it was a most typical exploration-type familia.
That familia had once reached the 59th floor and still held the record for the deepest floor reached.
After the Zeus Familia declined and, together with the Hera Familia, was replaced by the Loki Familia and Freyja Familia, no one had ever reached the 59th floor again.
Naturally, the Zeus Familia had also once set foot on the 52nd floor and suffered bombardment from the 58th floor.
Such cross-floor sniping was not only absurd, but had also turned floors 52 through 58 into a veritable single region.
Even if adventurers were lucky enough to evade the Cannon Dragons' sniping, it would give rise to another danger.
The floors would become connected.
Just as the middle floors had vertical shafts connecting the floors above and below, the Cannon Dragons would forcibly open vertical shafts between floors 52 and 58.
Then, another type of Monster King would appear from each of the connected floors.
They were Flying Dragons, each over three meters long, lurking in horizontal tunnels connected like an anthill to the vertical shafts.
To these winged Monster Kings, the vertical shafts forcibly opened by the Cannon Dragons were practically prison gates.
Once they appeared, the Flying Dragons would break free from the prison called the floors and attack adventurers through the vertical shafts opened by the Cannon