In the ordinary Gintama High, in class 2-5, there was a student looking in a mirror even during lesson time. As expected, it ended with the mirror being confiscated, with the teacher saying it would be returned at graduation.

Sigh... Ugh, so annoying. I want to blow up this school.

After school, she happens to run into Guest, who is walking by carrying a mirror.

Ah, Guest-chin? My mirror got snatched, so lend me yours just once. I'll give it back to you when you graduate, Guest-chin.