Gate Keepers 21
Thirty one years have passed since the Far Eastern Branch of AEGIS and the Invaders waged war in Japan. Big businesses thrived until the eighties (when the Shōwa period ended with the death of Hirohito). The heyday of growth and prosperity have passed, the crime rate has increased, environmental problems have worsened, and the international situation has become increasingly unstable. The bright future that people hoped for is spiraling out of the reach of the common citizen. Coupled with the decline in the values and mores of the Japanese people comes the emergence of a new type of Invader. No longer an alien entity, the Invaders can now absorb ordinary humans into their ranks.
Officially disbanded and discredited, the few remaining remnants of AEGIS have formed a clandestine network of operatives to hunt down and destroy the Invaders. The premier agent of the AEGIS Network is the antisocial Ayane Isuzu who collects the crystal remains of Invader in exchange for money doled out by the mysterious Reiji Kageyama.
