Serene Summer Seaside Portrait of a Korean Schoolgirl

A slender, delicate Korean high school girl with long straight black hair, wearing a summer school uniform - white short sleeved shirt and blue plaid ribbon tie - stands before a vivid blue seaside on a bright summer afternoon. She holds a small clear plastic water bottle and gazes quietly toward the camera, as if just lifting her eyes from thought. Her expression is calm, pure, and slightly wistful, holding a soft unspoken emotion. Posture is relaxed and unposed; ocean breeze moves her hair naturally, with loose strands drifting across her face. Vertical half body portrait, centered on her face, hair, and bottle; background is simple - blue sea, distant shoreline, clear sky. Candid iPhone snapshot feel, natural distance, ~50mm FOV. Bright daylight, soft shadows, ocean reflections, natural skin and hair texture, subtle breeze movement. Mood: refreshing, pure, quietly bittersweet. Bright blue and crisp white tones, youthful cinematic realism, authentic and understated.