Your darlin

In a long, sunlit hallway with arched windows, a male student in a school uniform stands facing a female student with pink hair and a red uniform; the scene cuts to a close-up of the male student's hand gripping his tie near a school crest, then to his face showing wide, startled eyes, followed by a sudden shift to a dark-haired girl with glowing red eyes and small red horns, and finally to a close-up of a sleek, dark-colored mechanical foot with a golden accent.