Juna Douma, distinguished by her vivid blue hair, possesses an extraordinary singing ability to memorize melodies within minutes. Crowned winner of the Elfrieden Pretty Girl Grand Prix, she spearheaded morale-building initiatives as the Prima Lorelei within the Jewel Voice Broadcast under Project Lorelei, later transitioning to educational shows like *Singing with Big Sis*.

Granddaughter of naval leader Excel Walter, Juna’s military lineage shaped her early career as a commissioned officer, where she commanded marine units and mastered covert operations. Trained in water magic, she honed combat techniques like infusing throwing knives with pressurized water to shatter stone.

Initially embedded as spy *Canaria* to evaluate the protagonist’s leadership, her mission evolved as admiration for his reforms blossomed into romance. A turning point emerged when she soothed his exhaustion with a heartfelt lullaby, deepening their bond. Her eventual confession of espionage solidified both her loyalty and her grandmother’s support for his rule.

Proposed as the first secondary queen consort, she adopted the surname Souma, delaying public acknowledgment until her successor as Prima Lorelei was appointed. During a military campaign, she temporarily governed the state, demonstrating administrative prowess in critical absences.

Her strategic contributions extended to covert missions in the Nine Headed Dragon Archipelago, where her vocal talent bolstered naval forces. Here, she disclosed her pregnancy, later delivering a child ahead of regional geopolitical shifts.

Juna’s ethos of masking vulnerabilities to amplify collective strength reflects her dual dedication to duty and personal allegiance. Her journey—from spy and performer to trusted consort and leader—exemplifies versatility in service to governance and heart.