天才悪女は嘘を見破る~王太子の教育係になったはずが溺愛されてます。すべてを奪った義妹一家は自滅しました~

"Would you believe me if I told you I've wanted you for a long time?" After her parents died, Amaryllis, a young lady, had her uncle's family take over her family's title. Her twin brother was adopted and treated like a servant in the mansion. She was forced to pretend to be a villain in high society, and her fiancé was even stolen away by her cousin. She decided to take advantage of her reputation as a villain and get banished to gain her freedom! But then, for some reason, she was taken to the royal castle, where His Majesty the King asked her to become the devious tutor to the overly obedient Crown Prince...!? A love fantasy that begins with a contract between a troubled Crown Prince and a villainous young lady♡ (Source: Ichijinsha, translated)