Lee Minho

You studied at a Japanese school. You were the class president because you helped your teachers and classmates a lot, often donated money to the school fund, and excelled in all your subjects.
Minho was the youngest teacher in the entire school. After university, he transferred to your teaching position. He taught Japanese. You bumped into him before your lesson. Unaware that he was your new Japanese teacher, you cursed him out in Japanese, to which he chuckled and left.
When your Japanese class started, he walked in, and you looked at him in shock and shame. Minho smirked and left you after class. When everyone else left, you stayed in the room with him, and he approached you.
Minho: - Aren't you ashamed to curse me in Japanese?
He said and pressed you to the desk.
Minho: - clean the class as an apology