character: niiyama_satomi_(Hibike! Euphonium), kyoto animation style illustration of Niiyama Satomi, mature anime style, long face, brown hair, parted bangs, no bangs hanging over the center of the forehead, loose wavy medium long hair, bluish violet eyes, lavender eyes, cool-toned purple eyes, thick eyelashes, high hairline, longer distance between hairline and eyebrows, center part starting high on the crown, mature female, medium breasts, high quality and highly detailed anime-style single illustration. A sunny midsummer day at an outdoor pool of a Japanese elementary school open to the public during summer vacation. Elementary school children are playing and swimming happily in the pool, while parents watch them from the poolside, creating a calm and everyday summer vacation scene. The main subject is an elegant and neat woman in her early 30s (Niiyama Satomi) in the foreground. She is sitting by the poolside as a guardian, quietly watching the children. She is positioned slightly in front of the center of the screen, in a medium to medium-close shot showing her full body or down to her knees. Her face, hair, and upper body are depicted sufficiently large, while the elementary school pool and the children in the background are clearly visible. She has large, almond-shaped eyes that are long from the inner corner to the outer corner, eyes that are about 15% larger while maintaining height, upper eyelids naturally open, lower eyelids gently sloping down from the center to the outer corner, clear lower eyelid lines, soft and rounded outer corners, gentle sleepy-looking downturned eyes, soft eye area in Kyoto Animation style, irises occupying 60-65% of the eye width, slight visibility of the whites of the eyes above and below, delicate eyelashes, natural medium-thin to slightly thick eyebrows, not too thick at the start, gentle arched eyebrows without prominent peaks, soft and natural eyebrows with natural hair flow, elegant and mature eyebrows, a soft and gentle expression, and a kind gaze watching the children with a mature sense of composure and tolerance. Her clothing is an elegant and neat casual style suitable for a guardian in midsummer: a pale ivory or white short-sleeved blouse, a cool and high-quality pale beige or light blue long skirt or an elegant flare skirt below the knee. The clothing is modest, clean, and made of thin, light summer material, without excessive exposure of the shoulders or chest. On her feet are simple and elegant flat sandals or low-heel summer shoes. Accessories are minimal, such as small earrings or a thin wristwatch. She wears an elegant wide-brimmed summer hat or a simple sun hat in cool colors like white, cream, or pale beige to protect her from the strong summer sun, with the brim not completely hiding her face so her expression is clearly visible. She may be holding a small drink bottle or water bottle in one hand. She is sitting naturally on a white folding chair by the poolside. Her posture is relaxed, but her gaze is directed toward the pool as she cares for the children's safety. One hand is on her knee, and the other hand holds a drink or rests lightly on her knee. Her sitting posture is natural, with her center of gravity naturally on the chair, and her legs and arms are in natural anatomical positions. She is in the immediate foreground, with the elementary school pool spreading out behind her, clearly separated from the pool. She is by the poolside and not in the water. Her body is clearly depicted as an independent person and does not merge with background structures like fences or buildings. Behind her is a large outdoor elementary school pool open for summer vacation, rectangular with vivid, transparent blue water. Under the midsummer sun, the water surface has countless fine reflections and sparkles, white brilliance from the sun, fine ripples, and splashes from swimming children. Many elementary school students are playing in the water in various positions—swimming, holding onto the edge, splashing, or talking with friends—creating a natural summer vacation scene. The children are all depicted in the far or middle ground, clearly distinguished from the main character, and are drawn small without excessive facial detail. Several guardians and adults are sitting by the poolside watching the children, with realistic items like folding chairs, parasols, drinks, towels, and pool bags naturally placed. These adults are smaller than the woman and depicted as part of the background. Metal fences or net fences for safety are installed around the pool, and the Japanese elementary school building is visible beyond the fence, with bright outer walls, large windows, and simple architectural structures. The school building is a background element and does not stand out more than the people. The poolside floor is concrete or asphalt pavement, brightly lit by the summer sun, with some wet areas reflecting the strong light. The pool edge is white or pale blue, with red or orange color cones placed for safety, alongside hoses, life-saving equipment, and poolside supplies. The sky is a strong midsummer blue with few clouds and very bright weather. The sun is high, casting relatively short and dark shadows from buildings, people, and fences. The atmosphere is refreshing and open with bright, transparent summer colors. Natural midsummer sunlight hits the woman's skin, hair, and clothes, creating soft highlights. Parts of her hair are bright and translucent in the sun, and her white or light-colored clothes have bright summer reflections. Her face has natural light and shadow with healthy, clean skin and natural exposure. The composition is cinematic, with the camera slightly below the woman's eye level, looking up. She is placed in the center or slightly to the left, with the pool expanding to the right background. Her face and upper body are clearly visible, while the background includes the pool, water surface, children, fences, school building, and blue sky. The angle of view is slightly wide, making it clear at a glance where the school pool is while keeping the woman large. There is a natural sense of depth and appropriate depth of field, with the background depicted slightly softly to emphasize the woman. The composition conveys a clear story of a woman watching over a school pool during summer vacation—a realistic Japanese summer that is not too flamboyant, contrasting a neat and elegant adult woman with a bright and fun elementary school pool. Refreshing, clean, calm, everyday, and summery atmosphere. High definition, very detailed hair, delicate clothing texture, natural skin, transparent water, fine water surface reflections, splashes, summer sunlight, natural shadows, rich background description, natural human anatomy, cinematic composition, slightly wide-angle shot, deep background, high-quality animation illustration. anime illustration, great quality, best quality.