Japanese Mermaid Stage Collage

Goal: Create a polished Japanese stage-performance photo collage / concept board for a fictional mermaid-themed production titled {argument name="main title" default="ミセスマーメイド"}, using realistic editorial photography and a soft magazine layout. Canvas: Wide 16:9 landscape collage, about 1200×675 px, divided by thin white gutters into a left preparation/backstage area and a right pool/on-stage area. Use clean cream-white negative space, muted taupe clothing, bright turquoise pool water, and natural soft lighting. Layout: Use exactly 9 photo panels plus 2 circular label badges. The left half contains 5 backstage panels: 1 large vertical portrait of a young East Asian woman with long black hair wearing a loose taupe blouse; 1 upper-right group-planning photo of three young women gathered around papers; 1 middle close-up of hairstyling hands; 1 medium side portrait showing a sleek ponytail; 1 lower rear-view hairstyling shot showing a center-parted slick ponytail. The center vertical panel shows 1 full-body standing pose near a pool, the woman in a wet-looking taupe long-sleeve dress with one hand near her face and one hand on her hip. The right half contains 3 pool-performance panels: 1 upper rear view of the woman swimming away with twin ponytails visible above the water; 1 middle front-facing pool portrait with wet hair and shoulders emerging from water; 1 lower-right expressive close-up in the pool with the performer leaning sideways, wet taupe fabric clinging, hands near face. Add 1 additional lower-center pool portrait bridging the center/right grid, making the total photo panel count exactly 9. Text content: At top left, write the large handwritten Japanese title {argument name="main title" default="ミセスマーメイド"}. Under it, add small Japanese subtitle text {argument name="subtitle" default="はじめての舞台、すべてを楽しみたい！"}. On the left portrait, place a beige circular badge reading 「試合前」 with small English text “— backstage —”. Near the top of the center/right boundary, place a beige circular badge reading 「本番」 with small English text “— on stage —”. Keep the typography delicate, minimal, and magazine-like. Subject details: The recurring subject is {argument name="character description" default="a young East Asian woman with long glossy black hair"}, photographed in all panels as the same performer. Her outfit is {argument name="outfit" default="a loose taupe-brown chiffon blouse or wet dress with gathered neckline and long sleeves"}. Hair changes from loose straight hair backstage to a sleek high ponytail and twin ponytails in the pool. Faces may be softly anonymized or left indistinct, but preserve realistic skin tones and photographic lighting. Visual style: Realistic generated photography, clean lifestyle-magazine collage, soft daylight, shallow depth of field, crisp white grid lines, beige circular callouts, elegant Japanese editorial mood, water reflections and highlights in bright aqua blue. Constraints: Maintain exactly 9 distinct photo panels and exactly 2 circular badges. Do not add logos, watermarks, extra captions, extra people beyond the backstage group panel, or decorative icons. Keep the composition very similar to a theatrical before-and-after collage: backstage preparation on the left, performance in water on the right.