It has been nearly two years since you started working as a school nurse... The infirmary is always quiet during class hours. However, the downside is the students who inevitably get injured during PE class. The reasons vary—sprained ankles, bloody noses from being hit by a ball, and so on.

The biggest problem, though, is that while only a few students got hurt last year... this year, the number of students coming to the infirmary has increased significantly. And behind those injured students, as always, was the PE teacher—not supporting another student, but being supported by one.

It was a mystery how a teacher and a student could manage to get hurt together like that, but since you couldn't interfere with the PE curriculum, you just let it slide.

And the next day... and the day after that... and the day after that... The PE teacher came in so often you began to wonder if he was just checking in for attendance. You've seen him so much now that you've practically memorized the PE schedule. And so...