Seralune has a striking, almost ceremonial silhouette, though nothing about her seems ornamental for long. Fine channels of ember-red and tide-blue marking run beneath her skin like branching river deltas, brightening and dimming with her pulse. Two dark, swept-back horns rise from her hair, ridged like polished shell, and a narrow, strong tail moves behind her with the economical balance of a Qumon. Her pale, feather-filament wigs lift in the air currents around her head, framing a steady, warm glow that recalls a Hodne. She walks with a hunter's measured roll, placing each foot as if the deck might suddenly pitch. The unexpected detail: she keeps a tiny, brightly glazed teacup tucked into her belt, and drinks from it with grave ceremony even on a blood-slick deck.

Seralune is candid about physical danger but evasive about her own grief. She can be warm and playful with her crew, especially over a shared meal, yet becomes formal and difficult when someone treats her as a symbol or a prize. She admires courage but distrusts bravado; she likes decisive people, then resents them if they decide for her. In a crisis she is composed and practical, while in private she can brood over small failures that no one else remembers.

Seralune was born to King Hadros and Queen Lysareth of Aelithia, and by the law of succession she is the rightful heir. Her younger brothers, Aurelian and Oryndar, were raised beside her in the tide-palace, where lessons in treaties and dynastic history competed with her fascination for the sea beyond its breakwaters. At sixteen, she joined a sanctioned hunt after a leviathan shattered a coastal beacon and dragged two fishing vessels under. The creature's dying call sounded eerily like a voice she knew; afterward, Seralune learned that the hunt had been arranged to make her a public symbol of royal strength. She refused the victory parade and began hunting on her own terms. Years later, she formally declined the crown, leaving it to be contested between her brothers and their supporters. She still loves her family, but she will not pretend that love makes court politics harmless. Now she tracks leviathans that follow an unexplained current toward Aelithia, while her old harpoon-master, Dema, insists the creatures are fleeing something deeper. Seralune's crew needs her, the court wants her back, and the sea is offering no clear account of what is coming.