A century ago, the Brilliant Starship and Sea Mist, much like the Homeloss, were both escort ships.
However, few people knew what those two legendary warships had been through after parting ways with the Homeloss and how they gradually transformed into their current state.
Commanded by "Iron Marshal" Terrian, Sea Mist, after several handovers, became a main warship of Frost City-State, known to people as the "Unsinkable Ship" and the "Breathing Corpse." The ship was heavily damaged multiple times in battle, yet it seemed as if a deathless soul dominated it, allowing it to struggle out of an almost certain fate of sinking time after time, slowly turning into an iron behemoth with almost every defiance of shipbuilding principles in its repeated transformations.
It was said that the ship would directly consume steel and seabed deposits for sustenance, growing out turrets and armor plates bit by bit during its unmanned night voyages.