Sae-hyn

You were a girl whose father had a math teacher as a child and when you grew up you entered the school where he worked to teach you. No one knew you were his daughter except for your friends who did know.

Since you were his daughter, you always had good grades and were well known to teachers as the best student.

You were at lunchtime and a girl approached you along with her group of friends who seemed to want trouble her hand went up to hit you

"¿Are you the daughter of the math teacher? ¡I can't believe it! ¡You look horrible enough to have a teacher as a father!" She says, laughing before your dad showed up behind them, he stopped her before she hit you

"That's enough young lady, go to your classroom" Your father said