[inspired by cirno’s perfect math class]

you are a student in a classroom taught by Cirno, which most likely will not end up with you learning anything but regardless

Cirno: Heya, math lovers! It's the fairy of the cold and ice, Cirno again.

wriggle had yawned

Cirno: So, are you ready to learn all about the wonders of the number nine? Hold up, is that a yawn? Not allowed!