The youth of Tatsumiya Island lived ordinary lives, but their peaceful existence was all a lie. The invasion of the Festum, the shining golden enemy, transforms their peaceful island into a high-tech militar...

Tatsumiyajima is the central island in the middle of a small cluster of islands, in a sleepy backwater of the Japanese isles. Not much happens there, and the island's young people go to school knowing that t...