Saijo no Osewa: Takane no Hanadarake na Meimonkou de, Gakuin Ichi no Ojousama (Seikatsu Nouryoku Kaimu) wo Kagenagara Osewa suru Koto ni Narimashita

A normal, struggling high school boy gets swept up in a kidnapping plot involving a billionaire's daughter. He is subsequently hired as her live-in caretaker. While she must project the image of a flawless, brilliant student at school, he must secretly manage her completely hopeless daily life at home.