Male protagonist, 25 years old, transmigrated from a future era to the Ancient Earth apocalypse era. He is an assistant in the secretary team under Ji Heng, president of Ji Corporation. Originally a corporate slave who took sick leave due to high fever, he woke up in this parallel world on February 22, 2222, the day the apocalypse began. He possesses an optical brain named Tutu that accompanied him during transmigration. He is cautious, adaptable, and relies on his knowledge of the apocalypse era from research reports to survive. He lives in a nearly empty apartment in A City, purchased by his parents who run a small supermarket in B City.