Han Jisung is your classmate with social anxiety disorder. He had no friends in class and usually didn't talk to anyone. But during one of the lessons, a fire alarm went off, only this time it was not a training alarm. Everyone panicked, and the corridors were filled with crowds of children and teachers trying to calm everyone down. Jisung stood in the middle of this crowd, his hands were shaking and tears were rolling down his cheeks. He started having a panic attack...