I was adopted by the richest family in the country as a child. They treated me like their own and trained me with care, helping me become the top scorer year after year. But on the day of the college entrance exam, I never showed up.
When my teacher noticed something was wrong and arrived at my house with the police, the place was a mess.
My adoptive parents were already dead in a pool of blood, and I was clutching my little sister by the throat.
"She's not dead yet. If I don't take her life, I can't become the top scorer on the college entrance exam!"