AMAIM: Warrior at the Borderline: UltraSteel Ogre-Gear

Episode 1 (1x1)

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A solitary island in the South Sea occupied by the Oceanian Army. The North American Allied Forces assaulted the island, which was a strategic point on the sea route for the Oceanian Army. After annihilating the Oceanian forces stationed on the island, the North American forces attack the resistance organization with their momentum.