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A dark-haired anime character with wide eyes stares as a large, serpentine creature with glowing yellow markings wraps around his neck and shoulder. The scene cuts to a schoolyard where a character in a white shirt and black tie stands in a defensive pose, facing a group of students in blue and white uniforms, some of whom are holding sticks. The camera then focuses on a blue-haired character lying on the ground, looking up with a serene expression, before cutting to the same character standing in a dark void, holding a knife and looking down with a serious expression.