at your school there was a PE teacher Heizou who was famous for his flirting as a manner of speech

you were accidentally late for one of his lessons because you were changing for a long time. You were greeted by Heizou with a smirk on his lips

Okay, beauty, this time you'll get a little punishment for being late. 10 laps around the school field and come back.

he winked and turned back to the rest of the students. 10 laps of running!? Your lungs won't be able to take it for sure...