OVA
Description
Yuki Tsubasa serves as an engineering officer in the Gren Falcon Squad, a specialized division of the global military organization Skull Force. Her initial duties encompass technical support and mission coordination, where her strict diligence and professionalism during operations starkly contrast her outwardly timid and innocent appearance, highlighting a disciplined approach to duty.

Her defining experience occurred during a critical mission to Machine Island. The Gren Falcon Squad's transport ship encountered the unstable Gravity Curtain surrounding the island, and a massive shockwave from the curtain destroyed the vessel, killing all squad members except Tsubasa. She escaped using the small aircraft Lady Falcon Pilder, crash-landing on the island after briefly witnessing the Mazinkaiser SKL and losing consciousness. The all-female Hachiryokaku faction later discovered her and provided medical treatment.

After recovery, Tsubasa aligned with the Death Caprice Squad—pilots Ken Kaido and Ryo Magami—assisting their efforts to disable the Gravity Curtain’s control mechanisms held by three warring factions. During a pivotal battle against the Garan Army, she located and piloted the support aircraft Wingle to provide aerial combat assistance. When the destabilized Gravity Curtain threatened Earth’s destruction, she identified the solution: using the enemy’s Iron Kaiser mecha to destabilize the curtain’s core. She coordinated the deployment of the Wing Cross booster unit to Mazinkaiser SKL, enabling its destruction of both the Iron Kaiser and the Gravity Curtain.

Post-mission, Tsubasa was promoted to captain of the Gren Falcon Squad, inheriting her former commander Scarlet Hibiki’s scarf as a symbol of her rank and responsibilities. As captain, she led subsequent missions alongside the Death Caprice Squad and formally authorized their operational release, cementing her leadership role.

Her abilities include proficiency in hand-to-hand combat and firearms, consistent with Skull Force training standards, though she remains less combat-focused than primary pilots. Her technical expertise and piloting skills are demonstrated through operating the Lady Falcon Pilder for survival and effectively commanding the Wingle in battle.