The Guardian of Humanity: A 50-Year-Old Security Guard Against Demons

Cheng Yuan wakes up in a demon-infested apocalypse—and clocks in for his security shift anyway. For thirty years, this unassuming 50-year-old guard has shown up to work every single day, earning mysterious system rewards with each mundane task. While heroes chase glory and cultivators seek power, Old Cheng just wants to keep his neighborhood safe. But his unwavering dedication has transformed an ordinary residential complex into humanity's last sacred ground, where demons dare not tread.