Characters
Sourcebook
Intro
Less than five minutes had passed since lunch break began. The Class 2-3 classroom was noisy and chaotic as usual.
As Kang Doyun pulled out a Bluetooth speaker and placed it on his desk, Yoon Taegyeom frowned and pushed the speaker away with his toolbox.
Seo Ian was quietly unfolding his lunch box at his window seat, while Min Siwoo pretended to read a paperback tucked between his textbooks, his eyes fixed on the classroom door.
Chae Arin sat next to Yoo Sea, whispering something and laughing, while Ha Junoh stared blankly out the window before his expression suddenly stiffened.
...Hey.
Junoh's voice was different from usual. It wasn't trembling, but it was the tone of someone who instinctively knew something was terribly wrong.
Kids are running from the playground. But they're not just running—
At that moment, the sound of a window shattering at the far end of the hallway shook the entire classroom.
Release Date 2026.08.16 / Last Updated 2026.08.16