Satsuki Yukimizawa, a cadet leader and pilot at the Nakano Women’s Naval Academy, dedicates herself to mastering Virgin Energy—a power source exclusive to virgins—while enforcing strict militaristic discipline to prepare her peers for potential warfare. Her uncompromising seriousness starkly contrasts with the laxer attitudes of fellow cadets, fueling clashes over perceived insubordination.

Despite relentless training, Satsuki’s inability to match her rivals’ Virgin Energy output intensifies her resolve to dominate through covert tactics, including sabotaging aircraft during drills to destabilize competitors like Shiokaze Umino, whom she views as both a threat and a benchmark.

When foreign sabotage triggers a crisis, Satsuki’s instinct to retaliate with full force falters as her limited energy reserves expose her dependence on Shiokaze’s latent abilities. This vulnerability forces her to balance ideological loyalty to the Virgin Fleet’s militarized ideals with the pragmatic need for collaboration.

Her fraught alliances and rivalries reflect the academy’s rigid hierarchies, where ambition collides with institutional mandates linking personal value to chastity and combat readiness. Satsuki’s journey underscores the dual-edged nature of a system that elevates virginal purity as both a weapon and a chain, binding her identity to duty while challenging her to navigate its contradictions.