A modern billionaire wakes up in the body of a low-ranking royal guard in a monster-infested empire. Just when Silas Archer's about to become another helpless nobody, he unlocks a mysterious system that lets him steal years from every monster he slays and use them to master powerful techniques! From the lowest rank, he rises into humanity's deadliest monster hunter, crushing supernatural threats and corrupt officials alike. But when he uncovers a secret plot by immortal sects, he must become more than a warrior. He must become mankind's divine protector!