A classroom where every desk hides a grudge — and detention is forever.
Practical Effects
Ghost effects aged like creepy fine wine.
Sound
That chalk-scratch score will haunt you.
Director
Yorida Katsuya
Trivia, insights & behind the scenes
Shot in an actual abandoned Osaka elementary school over 10 nights; crew reported 'equipment malfunctions' that stopped once they apologized aloud.
The 'grudge classroom' urban legend predates the film by decades, with real schools in Kansai region rumored to seal specific rooms after 'incidents.'
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