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A character with pink hair stands with closed eyes in a dimly lit room, then the scene cuts to a student in a school uniform holding a paper doll, followed by a close-up of a character with long dark hair and a sinister smile, then a group of students in a classroom are thrown into chaos as debris flies, a red blade descends toward a prone figure, and finally a bloodied character with wide eyes and a maniacal grin holds a knife. The setting shifts from a quiet interior to a violent confrontation in a school environment.