Future Courier Guards the Empress

Delivery worker Nolan Tate transmigrates to the Great Xia Empire, meeting Empress Celestina — a violent ruler with unrivaled martial arts prowess but limited common sense. He leverages modern knowledge to assist her in fending off forced marriage and usurpation plots from The Four Houses and Five Lineages. He rises through political conflicts, wins the Empress's affection, pacifies the realm, and forges a fated cross-time romance.