The Babysitting Sword Saint

Grayson, the Tenth-Grade Sword Saint, lives in hiding as a stablehand searching for the savior marked by the Plum Blossom Seal. He saves Daisy, daughter of escort chief Stephanie, and is forced into a fake marriage. During an escort run carrying the All-Realm Map, Luther, the Northern Prince, and others attack them. While caring for the child, Grayson reveals his power, awakens the Eleventh Grade, drives back northern troops, and discovers Stephanie is the woman he sought.