Hadashi no Aitsu

From Perfect Illusions: This is the story of Hamada Akari, a sixteen-year-old girl whose father has problems with money. To pay off one of his debts, her dad sends her as a servant to the Otomo family. She is forced to live with them and attend a private school where only the richest and snobbiest kids enroll. The son of the Otomo family fights constantly with her and the tension between the two never seems to disappear.