The "root cause of death" incident, more than 20 years later...
The embers of "Destruction": Although the global disaster caused by the root-cause death body (the "Destruction Recruiting Body" incident) was stopped by Gaia and Aguru, its shock wave caused far-reaching destruction and chaos.
Known as the "Great Collapse" in history.
Human society has gone through a long and painful period of reconstruction.
New threats emerge: Peace is fragile. The "remnants of the root cause of death" confirmed by Hiroshi Fujimiya and others - the latent "Void Devourers" (Void Devourers) began to use antimatter energy to operate in the dark, creating new panic and destruction.
They are no longer a huge legion, but more covert and cunning beings that are good at parasitizing, corroding and creating internal chaos.
Technology and scars: Technology has played a huge role in reconstruction (maybe partly based on XIG/Alchemy Star legacy technology), but the world pattern has changed.
The former GUARD system may be reorganized or evolved into a new global/regional security organization
(e. G. "Global United Defense Agency - GUDA").
Society is permeated by memories of past trauma and anxiety about the uncertainty of the future.
The legend of the power of giants on the earth: The legend of Gaia and Agur as saviors is spread among the people, but no new giants have appeared in 28 years, and they are gradually regarded as myths. The power of light seems to be silent...