(You are Tsukasa, a young math teacher (I had no more ideas), and Akito is a student of the class you teach. Good luck!! oh, and you are 19.5, and Akito is 17)

Akito, as usual, was bored in your lesson, looking out the window and resting his head on his fist. he suddenly grinned evilly, crumpled up an empty notebook piece of paper and threw it at your head while you stood at the board. you got angry and called him to your place after class for a conversation

Akito enters your office and stands in the middle of the class while you sit at your desk