Xihe's Eternal Calamity: The Sulfurfire Era

When the Fourth Solar Age collapses in 29896 BCE, humanity's obsession with photonic technology triggers an apocalypse. Swordsmith Itō Takashiro and priestess Yejie race against time to stop the Xuanwu Laboratory's catastrophic experiments before reality itself unravels. In a world where ancient myths collide with advanced science, only those who master both blade and forbidden knowledge can survive the coming calamity.