Noroware Koushaku-sama no Wakeari Maid

The key to breaking the Marquis's "curse" lies in a lonely maid with a secret... Laura Riddle lost her mother shortly after she was born and is treated like a servant by her aunt and uncle, who are barons. One night, Laura goes shopping at her aunt's command and rescues a boy who is about to be kidnapped by a kidnapper. The boy seems to have ties to the Marquis of Dunford family, who are notorious for being misanthropes...

(Source: Comic Ride Ivy, translated)