Soukyuu no Fafner: Dead Aggressor - Arcadian Memory

Tatsumiyajima appears to be a peaceful island hidden from the conflicts consuming the outside world, but its children have been raised beneath a secret they can no longer avoid. When the alien Festum discover the island, Kazuki Makabe and his classmates are drawn into the Fafner program and forced to become the defenders of the home they thought they knew.

The battles bind Kazuki's fate to Soushi Minashiro and expose the cost of using machines built to confront an enemy that can invade both body and mind. As friends are lost, loyalties tested, and the truth about the island emerges, the struggle against the Festum becomes inseparable from the young pilots' fight to preserve their own humanity.