Finis, a silver-haired songstress with piercing cyan eyes, wields Spirit Songs capable of bending fire, water, and ice to her will—each melody exacting a toll on her vitality. Exploited as a living weapon by the Capital Army under Prince Rudo Bernstein IV, her childlike naivety and chronic disorientation leave her dependent on her steadfast maid, Corte. Her fragile trust blossoms into an earnest connection with Henry Leobolt, a knight who sees her as more than a tool, only for Prince Rudo to twist that bond into betrayal. Disguised as a foe, Henry is incinerated by Finis’s Song of Fire, a deception that shatters her spirit.

Grief-stricken, she unleashes the forbidden Song of Mortality, erasing the world and binding herself to immortality. Condemned to wander epochs, she watches civilizations crumble and rebirth, clinging to the delusion of reuniting with Henry. Over millennia, she crosses paths with his hollow reincarnations, none echoing the man she loved, driving her to fracture time itself in repeated resets—a desperation that etches myths like the Starsong Festival into history.

Her path collides with Rin, a being forged from the hope Finis discarded before her apocalyptic dirge. Rin’s nurturing essence, radiating healing and growth, opposes Finis’s destructive songs, yet their alliance becomes pivotal. In a climactic convergence, their duet—a fusion of creation and annihilation—halts the endless cycle. The restored world permits Finis to shed her ageless curse, aging naturally as she settles alongside Corte, now a knight, her pregnancy hinting at Rin’s return as her daughter.

Once a martyr to loss, Finis’s journey closes in quiet resilience, her release from immortality underscoring narratives of cyclical time, the perils of absolute power, and redemption through surrender. Her duality—life and ruin entwined in song—mirrors the fragile balance she ultimately secures.