Skelter Heaven

Synopsis

In the far-off future, a mysterious floating object materializes without warning at the city's core. The Defense Agency commissions the top-secret mission unit "Alta Mira Agency," or AA, to confront this unknown invader. Hunagai Otsuya is responsible for overseeing the robot training. He must select one of the girls to undergo special training, which she will receive in secret. They are required to use the "Battle Soles" to repel the enemy, even if it costs them their lives.