"A descendant of the legendary pirate, Captain Hamett.
Nominated by Ginium Hamett, her father and chairperson of the United Islands, she dons the Brigandine of Ego and sets off to conquer the continent.
To Stella, the continent is no different from the vast seas.
Decisive and spontaneous, she reasons it would be best to strike before others have the chance, especially during times of war.
Her actions are straightforward and direct.
Although short-tempered, she has a generous heart, and is endlessly merry and trustworthy.
This young pirate captain sails toward the battlefield with a smile, confident she will live up to the trust and expectations placed in her by her people."

Stella Hamett's childhood friend and staff officer, he is highly educated and a person of common sense, both unusual traits for a member of the United Islands of Mirelva.
As the most powerful mage in the Federal Defense Knights, his magic is second to none in Mirelva.
His gentle and calm disposition and logical line of thought make him the polar opposite of Stella.
As complementary characters, the two have full trust in one another.
He collects all manner of antiques.
One day while researching his collection at the studio, he accidentally created Umimaru.
He has been educating his creation ever since.

Head of the mafia group known as Cafferian that controls the United Islands of Mirelva's underworld.
Although he projects himself as a chivalrous bandit, his hands are nevertheless stained by countless crimes. Sensing an opportunity to make money, he decides to join Mirelva's war effort.
Although he sneers at human relationships built on honor and empathy, he is nevertheless skilled in the finer points of social niceties and has his own reasons for joining the war as one of the United Islands' representatives.
Though he and Stella often quarrel, he finds the fact that she does not bend to his will endearing.

Chairperson of the United Islands of Mirelva.
His body is covered from head to toe in mermaid tattoos, earning him the nickname Mermaid Ginny.
His natural strength and sense of responsibility earned him the respect of many, resulting in him being appointed chairperson.
Nowadays, however, he's just a sad drunk who loves drinking rum and talking nonstop about the good old days.
Despite this, he is still one of the strongest men in Mirelva and, for the sake of his beloved daughter Stella, will use his massive form to tear up the battlefield and overwhelm enemy armies.

A mechanical doll Pluto somehow created by using magic to piece together mysterious spare parts bought from flea markets.
He calls himself an automaton, though neither Stella nor Pluto know what that even means, let alone what language the word is from.
Although his birth and construction remains a mystery, it is clearly evident that mana is what powers him.
He wears a hand-me-down cape given to him by Pluto, fashioning himself as a rune knight alongside those around him.