Hayate the Combat Butler.

Due to his parents' gambling habits, Xiao Sa has been forced to be the bread winner since childhood. When he gets fired from both his jobs, he discovers his parents ran off with his last paycheck, leaving behind a massive debt to the mafia. Convinced that good guys never win, he concocts a plan to hold the heiress Xiao Zhi ransom, but when Xiao Sa mistakingly saves her, he's offered a rags-to-riches position as her butler. Based on the hit manga, true love and comedic drama blossom in this reverse Cinderella tale.