Korean Beauty in Sunlit Classroom

During the day, a beautiful young Korean woman stands by the large classroom window in a spacious Korean classroom, her hyper-realistic portrait posing naturally, while looking directly at the camera with a gentle, gentle smile. A hand casually tucked into her hair, a relaxed and confident posture, embodying modern Korean fashion aesthetics. She wore a fitted black ribbed long-sleeve crew-neck top and light gray skinny jeans, creating a minimalist and elegant look. Long straight black hair with a soft, naturally voluminous feel, flawless fair skin, light makeup, and a delicate necklace. Warm sunlight streams through tall windows, creating cinematic natural light, soft shadows, a clean academic atmosphere, a green blackboard and the Korean flag visible in the background, shallow depth of field, high detail, realistic skin texture, DSLR image quality, ultra-clear focus, comfortable youthful atmosphere, vertical composition, 3:4 aspect ratio.