Summer Urban Rooftop Portrait Prompt

Subject: 
{argument name="theme" default="Sky Blue Ramune Day"}

Subject Body:
{argument name="character" default="A woman in her 20s"} smiling with a Ramune soda in hand on an {argument name="location" default="urban building rooftop in midsummer"}. Standing slightly to the right of center on a vertical 2:3 canvas, captured from head to upper thighs. The person occupies approximately 70% of the screen, leaving ample negative space of vibrant blue sky at the top. Visual accents include white wireless headphones around the neck, a pale blue drink in a transparent cup, and white hand-drawn style musical notes and stars floating around.

Person/Expression:
Bright ivory-beige skin with natural pink color and delicate texture. Soft highlights from the summer sun on cheeks, nose tip, shoulders, and collarbones. Light rose pink blush, champagne beige and pink-brown eye makeup, long slender lashes, natural tear bags, soft brown eyebrows, and sheer pink-beige lips. A bright smile with the mouth slightly open, face turned slightly toward the upper left of the screen, with eyes looking diagonally upward. Small, clear catchlights in the eyes. Hair is bright milk tea ash brown with thin see-through bangs, face-framing layers, and medium-long length below the shoulders. Hair ends are loosely curled inward, with fine strands and natural flyaways swaying slightly in the summer air. Each strand, soft luster, and fine highlights are meticulously drawn.

Clothing/Pose:
Wearing a white fine-ribbed square-neck camisole with a translucent thin white shirt draped loosely over the shoulders. Bottoms are light sky blue lightweight shorts with a white drawstring at the waist. A healthy, mature, natural physique with a calm, feminine silhouette. Holding the transparent cup at chest height with her own left hand on the right side of the screen, while the fingertips of her right hand lightly bring the straw close to her lips. A relaxed standing posture with hips shifted slightly to the left and a slight difference in shoulder height. Precise depiction of the contact between fingers, cup, and straw.

Background/Lighting:
A rooftop of a building in an urban area of Japan. In the middle ground, a metal safety fence; in the background, a group of low to medium-rise buildings and thin power lines, with no text or logos. The sky is high-saturation clear blue with small white cumulus clouds on the left and bottom. Inside the transparent cup are ice, fine carbonated bubbles, and pale light blue Ramune soda, with cold condensation on the cup's surface. The primary light is hard daylight coming from the upper left. It brightly illuminates the cheeks, shoulders, arms, and top of the cup, casting soft shadows under the chin and inside the shirt. Subtle reflected light from the blue sky is added to the skin and white clothing.

Composition/Camera:
Vertical 2:3 aspect ratio, low angle looking up from a slightly low position. Natural perspective equivalent to 35-50mm. Focus accurately on the person's face, with background buildings lightly blurred. About 15% margin above the head, with hand-drawn white stars, notes, and short lines scattered on the left and right, and a white rough outline placed along the person's contour. Decorations do not hide the face, hands, or drink, creating a bright and light screen rhythm.

Texture/Style:
A bright and clean live-action photo combining summer fashion magazines and SNS portraits. Realistic expression of natural skin texture, transparent carbonation, the sheerness and fine wrinkles of the thin shirt, and the delicate movement of hair. A refreshing color scheme centered on blue, white, and pale light blue. Avoid excessive HDR or overly strong skin-beautifying corrections, adding light film grain and high-definition light depiction.

Negative:
Young-looking face, unnatural physique, excessive exposure, unnatural smile, extra fingers, missing fingers, fused fingers, fingers penetrating the cup, poor contact with the straw, distorted headphones, incorrect perspective, shadows inconsistent with the light source, garbled text, brand logos, watermarks, plastic-like skin.