In a ruined future Nerima, a photon‑energy catastrophe is rumored to have obliterated the region today.
No one can confirm its veracity, and information remains scarce, leaving doubts in the public eye.
The sole survivor is a towering photon research facility that now stands as a grim monument amid the ruins of the.
Z-chan and Gre-chan reside together in the Shutter District, which extends from the base of that tower.
Their dwelling, constructed from scavenged scraps, is called Photon House in the future.
The once‑abundant photon energy that coursed through the area has vanished, leaving the world under the reign of space‑borne Getter Rays.
Yet Z-chan and Gre-chan still harness the efficient photon power to illuminate their home in present.
