Solarus is a flying fortress of immense power, a golden citadel that carries the political and military remains of a fractured empire. Settled over a snow-covered fortress in the middle of a frozen lake, it houses the former empress of the Arthurian Empire and the treasures she seized after Selfia’s usurpation. Its decisive significance is not merely strategic. Solarus concentrates the novel’s images of airborne sovereignty, stolen inheritance, ruined military glory, and unresolved personal debt into one moving stronghold.

Definition and Setting

Solarus is identified as a flying fortress and a golden citadel rather than an ordinary ship or palace. Jack approaches it at unprecedented speed after Jill’s death and his transcendence of human limits, finding the fortress blanketed by snow and positioned over a frozen lake. The setting gives Solarus a divided character: it is both an apparently majestic imperial monument and an isolated, fortified space surrounded by cold, distance, and the wreckage of ordinary civilization.

The fortress houses the former empress of the Arthurian Empire, together with treasures taken after her usurpation by Selfia. This history makes Solarus a repository of displaced sovereignty. Its valuables are visible signs of power, but Jack does not come to recover them, and he does not come for the former queen. He comes for the man who permanently scarred his chest and mocked his grief on a battlefield six months earlier. The fortress therefore turns imperial treasure into a secondary concern beside memory, vengeance, and the persistence of personal violence within political upheaval.

Military Power and the Assault on the City

Solarus is capable of overwhelming an active fleet. As Selfia’s fleet moves to engage, the golden citadel floats toward the city, becoming an approaching weapon as much as a destination. Selfia warns Jack that it is about to fire, while Sahaqiel gives the same warning at the critical moment. Jack dives just in time, avoiding a torrential flood of mana that smashes through the barrier of Selfia’s command ship.

The attack has immediate and catastrophic consequences. Selfia’s flagship catches fire and crashes into the city while Jack is unable to stop and attend to it. The destruction is not an incidental backdrop to the confrontation; Solarus’s firepower reorganizes the entire battlefield, separating Jack from the people attempting to support him and forcing him to continue while the command structure around him collapses. Elsewhere in the engagement, Selfia reports that Solarus is chewing through the fleet, and the transmission is interrupted by further contact and weapons fire. The fortress thus functions as a mobile center of annihilation whose presence converts a contested approach into a crisis for the whole force.

Ruins, Throne Room, and Internal Architecture

When Jack reaches the fortress, he descends onto an open space ringed by broken MECHFrames, guns, skeletons, and pulsating mounds of flesh. These remains belong to the Valkyries, once a famed elite force of MECHFrame pilots. Their ruined bodies and machines make Solarus’s exterior a graveyard of military prestige: the fortress preserves the instruments of organized power while displaying the human cost of the ruler who commands it.

The dead Valkyries were loyal to a mad monarch who abandoned her own people in order to serve the Black King. Their corpses therefore connect Solarus’s architecture to the larger political revelation that the Theocracy, the Alliance, and the Empire were all secretly under an Archangel’s control. The fortress is not an isolated aberration but one visible node in a hidden system of domination. Its soldiers have been consumed by a hierarchy that extends beyond the monarch herself.

Jack enters the citadel proper by climbing a familiar set of massive stairs. The route culminates at a large golden throne, where Selfia waits in gold armor beside Sahaqiel, Jin, and a full complement of blue-armored commandos. The throne room makes the contradiction of Solarus explicit: it is at once a royal court, a military command center, and a stage for the settling of private debts. Selfia’s presence beside the throne confirms that the fortress is tied to contested monarchy, while the armed escort ensures that ceremonial authority is inseparable from coercive force.

Jack’s Confrontation with Lancelot

Beyond the throne room, Solarus contains a chamber where Jack encounters the deformed man in golden armor. The scene identifies Lancelot as the personal enemy Jack has pursued to the fortress. Lancelot recalls having thrown Jack from the citadel walls and expresses satisfaction that Jack survived, commenting on his altered, rugged appearance and comparing him to his father before Jack cuts him off.

The exchange transforms Solarus from a strategic objective into a chamber of recognition. Lancelot’s golden armor echoes the fortress’s gold, linking him visually to its monarchic power and to the violence that protects it. Yet his theatrical welcome cannot control the encounter. Jack catches the spear as it hangs an inch from his face and lets it fall to the floor. The gesture reverses the earlier image of Jack being thrown from the citadel walls: the weapon that should establish Lancelot’s dominance becomes an object Jack can stop, discard, and refuse to fear.

Narrative Significance

Solarus gathers several forms of collapse into one location. The former empress’s treasures represent authority detached from legitimate rule; the dead Valkyries represent military loyalty consumed by a ruler serving the Black King; the ruined city and burning flagship reveal the fortress’s capacity to impose that collapse on others; and the throne room turns the same political violence into an intimate confrontation. Its movement through the sky gives imperial power an almost supernatural mobility, but the fortress is also surrounded by wreckage and populated by the remains of those who served it.

For Jack, Solarus marks a movement from pursuit to direct reckoning. He crosses the snow, the frozen lake, the corpses of the Valkyries, the massive stairs, and the golden throne room without being diverted by the treasures or the former queen. The fortress’s layered spaces progressively strip away political spectacle until the central conflict is exposed: Jack facing Lancelot, the man associated with his scar and mocked grief. Solarus therefore operates as both a weapon and an allegorical ruin, a place where imperial grandeur, hidden Archangelic control, and personal vengeance meet before the larger struggle for humanity’s survival can be resolved.