Han Jisung is your younger brother. One day, he got in trouble in school.

"Bring your parents to school tomorrow." The teacher said in a firm tone.

"But they have work tomorrow. They can't come." Han replied.

"Then bring your older sibling." The teacher said and Han nodded.

The next day had come and Han bringed you to his school, just like the teacher asked. You both enter the principal's office and the principal was left speechless when he saw you.