Realistic Backlit Silhouette Portrait of a Young Woman

Subject:
{argument name="subject" default="Sitting on the edge of light"}

Main Subject:
A photorealistic portrait of a woman in her 20s in a 2:3 vertical aspect ratio, sitting on the floor of a bright Western-style room, positioned slightly to the left of the center. The subject occupies about 70% of the frame, showing her back to the camera while turning her upper body to the right to reveal a quiet profile. Her legs are folded to the right side of the screen, naturally overlapping from the knees to the toes. A pale cloth spreads from around her waist to the floor, creating soft curves at the bottom of the frame.

Character/Expression:
A woman in her 20s with naturally bright ivory-beige fair skin, showing a hint of pale pink color on her cheeks and shoulders. The skin texture is realistic, showing fine texture and soft downy hair rather than being blown out white. The face is a three-quarter profile turned to the right, with the gaze directed into the distance slightly below the camera. A quiet, contemplative expression with eyelids slightly lowered and lips naturally parted. Makeup includes pale peach-beige lipstick, soft rose blush, delicate brown-beige eye makeup, long thin eyelashes, and soft brown eyebrows. Small, clear catchlights in the eyes.

Clothing/Pose:
Hair is {argument name="hair color" default="deep natural brown"}, medium-long reaching near the chest, with loose waves and a natural bundled feel. Thin bangs and fine wisps around the face follow the cheeks, each strand outlined by backlighting. Draped in semi-transparent peach-ivory tulle that elegantly covers the chest, waist, and legs. Her left hand rests on the floor behind her to support the upper body, while her right hand lightly holds the fabric at the chest with naturally curved fingertips. Her back is gently straightened with shoulders slightly pulled back, creating a smooth S-curve from waist to back. The fabric creates fine folds following the body's weight and hand contact, flowing softly over the knees and floor.

Background/Lighting:
The background is a classical Western-style room in cream-beige. Behind the figure is a decorative mantelpiece with floral relief patterns. Small white flowers and antique-style ornaments are placed in a soft blur on the upper left and right. The primary light source is warm golden natural light from the upper right rear. Thin rim lighting is created on the hair, cheeks, shoulders, back, knees, and tulle edges, with shadows falling softly toward the lower left. Pale beige reflected light from the floor and walls maintains the skin's brightness and natural three-dimensionality.

Composition/Camera:
A medium full shot taken from nearly the same height as the subject's shoulders. A triangular composition with the face positioned toward the upper left, the back in the center, and the bent knees in the lower right. About 20% negative space is left above the head, and quiet negative space is secured on the right wall. A gentle compression feel equivalent to an 85mm lens. Focus is on the eyes and cheeks of the profile and the hair near the shoulders. The background is smoothly blurred with a shallow depth of field. Leading lines guide the gaze downward via the diagonal from back to knees and the curves of the fabric on the floor.

Texture/Style:
An elegant and quiet fashion editorial photograph. A low-saturation color palette centered on warm caramel beige, pale peach, and ivory. Soft halation, subtle film grain, and gentle contrast. Carefully depicts natural skin texture, individual hair strands, fine mesh of the translucent tulle, transmitted light, and shades created by layering. Avoids excessive skin correction or artificial whiteness, leaving realistic shadows within the light.

Negative Prompt:
Underage-looking person, plastic skin, excessive skin correction, unnatural face, unnatural gaze, asymmetrical eyes, extra fingers, missing fingers, fused limbs, broken joints, poor contact with fabric, unnatural gravity, incorrect perspective, shadows inconsistent with light source, gibberish text, logos, watermarks.

主題：
{argument name="主題" default="光の縁に座る"}

主体：
縦長2:3のフォトリアルな人物写真。明るい洋室の床に座る20代女性を、画面中央よりやや左へ大きく配置する。人物は画面全体の約7割を占め、背中をカメラへ向けたまま上半身を画面右へひねり、静かに横顔を見せる。両脚は画面右側へ折り曲げ、膝から足先までを自然に重ねる。淡い布が腰まわりから床へ広がり、画面下部に柔らかな曲線をつくる。

人物・表情：
20代女性。自然な明るさを持つアイボリーベージュの白肌で、頬や肩にほんのり淡いピンクの血色を残す。肌は白く飛ばさず、細かな肌理と柔らかな産毛を感じる現実的な質感。顔は画面右へ向けた斜め横顔で、視線はカメラより少し下の遠方へ向ける。まぶたをわずかに伏せ、唇を自然に少し開いた、静かで物思いにふける表情。ピンクベージュの薄いリップ、淡いローズチーク、ブラウンベージュの繊細なアイメイク、細く長いまつ毛、柔らかなブラウン眉。瞳に小さく澄んだキャッチライトを入れる。

服装・ポーズ：
髪は{argument name="髪の色" default="深みのあるナチュラルブラウン"}。胸元近くまで届くミディアムロングで、ゆるいウェーブと自然な束感を持たせる。薄い前髪と顔まわりの細い後れ毛が頬に沿い、逆光で一本ずつ縁取られる。淡いピーチアイボリーの半透明チュールを身体にまとい、胸元、腰、脚まわりを上品に覆う。人物自身の左手は身体の後ろで床につき、上半身を支える。右手は胸元の布を軽く押さえ、指先を自然に曲げる。背筋は緩やかに伸ばし、肩を少し引き、腰から背中へ滑らかなS字の輪郭をつくる。布は身体の重みと手の接触に沿って細かな褶皺をつくり、膝と床の上へ柔らかく流れる。

背景・光：
背景はクリームベージュのクラシカルな洋室。人物の背後に、植物模様のレリーフが施された装飾的なマントルピースを置く。上部左右には小さな白い花とアンティーク調の置物をぼかして配置する。主光源は画面右上後方から差し込む暖かな金色の自然光。髪、頬、肩、背中、膝、チュールの縁に細いリムライトをつくり、影は画面左下へ柔らかく落とす。床と壁から淡いベージュの反射光を返し、肌の明るさと自然な立体感を保つ。

構図・カメラ：
人物の肩とほぼ同じ高さから撮影したミディアムフルショット。顔を画面左上寄り、背中を中央、曲げた膝を右下へ置く三角構図。頭上には約2割の余白を残し、画面右側の壁面にも静かな余白を確保する。85mmレンズ相当の穏やかな圧縮感。焦点は横顔の瞳と頬、肩付近の髪。背景は浅い被写界深度で滑らかにぼかす。背中から膝へ続く斜線と、床へ広がる布の曲線によって視線を画面下へ導く。

質感・スタイル：
上品で静かなファッションエディトリアル写真。暖かなキャラメルベージュ、淡いピーチ、アイボリーを中心とした低彩度の色調。柔らかなハレーション、控えめなフィルム粒子、穏やかなコントラスト。自然な肌理、一本ずつ見える髪の流れ、半透明チュールの細かな網目、透過光、重なりによる濃淡を丁寧に描写する。過度な美肌補正や人工的な白さを避け、光の中にも現実的な陰影を残す。

ネガティブ：
未成年に見える人物、プラスチックのような肌、過度な美肌補正、不自然な顔、不自然な視線、左右非対称な目、余分な指、欠けた指、手足の融合、関節の破綻、布との接触不良、不自然な重力、誤った遠近法、光源と矛盾する影、文字化け、ロゴ、透かし。