兩位快樂的日本女高中生穿著制服坐在火車上自拍，戴著眼鏡，穿著百褶裙和背心

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Create a realistic vertical smartphone selfie photo inside a Japanese limited express train carriage. Two cheerful Japanese high school girls sit side by side in green-gray upholstered train seats with white antimacassar headrest covers, viewed from a high wide-angle front-facing camera held by the girl on the left so her extended arm is visible in the lower left foreground. Both girls have straight black hair, youthful faces, natural skin texture, and rectangular eyeglasses, smiling warmly at the camera. The left girl has shoulder-length black hair with side bangs and wears a white short-sleeve school shirt, an ivory sleeveless sweater vest, a dark navy pleated skirt, navy knee socks, white sneakers, and a dark striped ribbon bow. The right girl has longer black hair tied back with side bangs and wears a white short-sleeve school shirt, a pale pink sleeveless sweater vest, a navy pleated skirt, navy socks, white sneakers, and a red striped ribbon bow; she raises her right hand in a peace sign near her face while her left hand rests on her lap. The train interior should include two adjacent seats, armrests, a window on the right showing a dark exterior reflection, muted beige flooring, and soft overhead carriage lighting. Add large text in the top-left corner reading GPT in bold rounded magenta letters with a thick white outline. Add a faint semi-transparent watermark across the lower center reading ©CottonAIImageLabo. Use a candid photorealistic style, slight wide-angle lens distortion, casual travel snapshot composition, clean details, no extra people, no anime styling, no exaggerated makeup.