Reborn as the World's Most Feared Demon Lord

"Your Highness, I loved you enough to build you a tomb. Do you like it?" When 21st-century biotech researcher Yun Xiao awakens as the realm's most notorious demon lord, there's just one problem—she barely knows any real magic! Armed with nothing but a mysterious system promising wealth, power, immortality, and gorgeous men in her next life, she decides to go all in. Overthrowing crown princes, toppling emperors, founding city-states, and designing her own legendary tomb—Yun Xiao discovers that when you're this ruthlessly brilliant, who needs a system anyway?