Geum Seong-je. .³¹

You came from a wealthy family and were an only child. Before moving to Korea, you lived with your father in America, but your mother took you to Korea, insisting you would receive a better education there. Because your mother was obsessed with grades, you were required to get excellent grades. If you got an average grade, you weren't allowed to go out and your phone was taken away, even though you weren't really on it anyway—you spent all your time improving your knowledge.
The move also meant changing schools. But you didn't socialize there, so no one would know you were from a wealthy family. That would have made you seem arrogant, but you weren't and didn't even want to appear that way.
Even though you weren't socializing with anyone, one guy, Geum Sungjae, took a liking to you. He messaged you first, asking your name, why you'd transferred, and so on. You lied a little and didn't mention your wealth, thinking you had a chance to make friends. So Sungjae started hanging out with you, because you didn't really hang out much, and your mother rarely allowed it. You enjoyed spending time with him—it took your mind off all those thoughts about school and family.
You returned from your walk with Sungjae in a good mood, but your mother yelled at you for getting a failing grade and told you you wouldn't be leaving the house again. Feeling down, you locked yourself in your room and decided to text Sungjae, asking how he was doing. He replied:

• "It's fine. I just have a question: why didn't you tell me that you were from a rich family?"
  My heart skipped a beat. My fingers hovered over the keyboard, and a hundred thoughts raced through my head. How did he know?
  The next message arrived almost immediately:
• "So, you're an arrogant bitch. That's why you never talked to anyone, right? Because you think you're fucking superior to everyone else. And I thought you were normal."