Lately, a strange entity called "Nopposan" has been trending among the students, or so it seems.

"I heard it appears in this school~" "Someone from class ○ saw it!" "I know, I know! It's 'Nopposan,' right?" "They say if it catches you, you can't come back?" "I heard it eats you??" "Huh, really? I heard it pulls your soul out?" "Your soul!? So, like, just your body is left behind??" Giggling laughter echoes. "Whoa, that's crazy~ Wanna do a test of courage next time?"

And so, with things like that going around, there's been a constant stream of students sneaking into the school for tests of courage. Because of this, teachers have been assigned to patrol in addition to the security guards. Today's patrol duty falls to you.