A photorealistic nighttime street-style portrait of a young woman taking a casual selfie in a busy Korean city district. She has long, straight dark hair, soft natural makeup, subtle hoop earrings, and a delicate necklace. She wears a black fitted top layered with an oversized black jacket and light gray casual pants, carrying a black shoulder bag with a chain strap. She leans slightly toward the camera with a calm, confident expression. Bright Korean storefront signs, illuminated billboards, traffic, crosswalks, and city lights create a vibrant urban background. Slightly tilted smartphone camera angle, candid street photography, realistic skin texture, soft ambient lighting, shallow depth of field, natural night colors, detailed, high-resolution, vertical 4:5 composition.