The siren spun, sending out waves of shrill noise.
Watching the students on the playground successfully complete the evacuation drill, the teacher smiled with satisfaction and called to someone beside him.
"Turn it off. That's enough."
The person nearby quickly cut the power. It wasn't a pleasant sound, after all.
But...
"Why hasn't it stopped?"
His eyes were full of confusion. Causing a misunderstanding would be no small matter.
The other person looked even more bewildered. Rubbing his ears with a deep frown, he examined the machine.
"I already turned it off. I even cut the power. How can it still be making noise? I made a point of inspecting it yesterday, too..."
"...!!!"