한국 호러·심리 스릴러 웹툰 컷

Original prompt

[Input]
- language: Korean
- output_size: 1024x1536

[Purpose]
Korean horror / psychological thriller webtoon single panel, vertical 9:16, tension-first visual storytelling for digital comic use.
Psychological unease only, with no gore; a suspenseful late-night subway-scene frame that feels like a serialized webtoon cliffhanger, rich with believable commuter-train details, signage, reflections, and small visual clues.

[Composition]
- Main subject: {주인공} placed slightly right of center, occupying about 38% of the frame height, with the head turned toward the left side of the car in a tense half-turn.
- Environment: {장면} fills the background with a long receding subway interior, fluorescent ceiling strips, stainless steel poles, hanging straps, patterned seats, route maps, warning stickers, ad panels, and reflective dark windows.
- Background treatment: cold blue-gray walls, brushed metal textures, scuffed vinyl floor, faint fingerprints on the glass, dim window reflections, small LED display glow, and a light haze that makes the carriage feel sealed and isolated.
- Framing: vertical 9:16, eye-level composition with the aisle leading the viewer’s gaze into the depth of the carriage; use door frames, seat rows, ceiling lights, and pole rhythm to guide the viewer toward the unsettling reflection.
- Suspense cue: the reflection in the window should subtly suggest a face that does not perfectly match the seated person, with the eyes or mouth slightly offset, believable enough to feel like a late-night optical distortion.
- In-panel text details: include small realistic Korean subway elements such as an overhead LED display reading “다음 역  영등포구청”, a door sticker “문에 기대지 마세요”, a route label “2호선 막차”, and a tiny webtoon-style caption box near the lower edge reading “그때, 창문 속 사람이 먼저 웃었다.”

[3. CORE STRUCTURE]
- Foreground / hero zone (lower-mid 40%): {주인공} shown in a tense half-turn pose, shoulders slightly raised, one hand close to a phone or bag strap, eyes directed toward the adjacent seat or window reflection; include subtle facial tension, cold highlights along the cheekbone, and a small shadow under the chin.
- Midground / tension object zone (center 30%): the empty adjacent seat, window reflection area, and nearby pole should carry the psychological twist; add a crumpled transfer receipt, seat-fabric pattern, faint shoe marks on the floor, and a reflected face that is ambiguous, slightly offset, and visually unsettling.
- Background / depth zone (upper 30%): {장면} extends into the far end of the train with diminishing perspective, repeated ceiling lights, hand straps, door windows, route map strips, ad posters for fictional late-night services, and a small digital clock reading “23:58” to heighten the trapped feeling.
- Lighting pass: {무드} rendered through cold fluorescent illumination with stronger shadow pockets under seats, around the face, between door panels, and along the aisle edges; the glass reflection should catch a thin cyan rim light.
- Effect pass: {시각 이펙트} applied subtly as a dark vignette, faint blur at the frame edges, reflected-glass ghosting, slight chromatic edge separation on the window reflection, and a barely visible shadow shape blending into the carriage darkness.
- Story clue layer: add small environmental hints like a half-torn missing-person notice on the ad panel, a reflection-only hand shape near the glass, and an empty priority seat sign, all integrated naturally into the subway setting.

[4. STYLE RULES]
- Typography: use Pretendard SemiBold or Noto Sans KR Bold for captions, subway signs, stickers, and SFX; compact webtoon caption scale, clean anti-aliased Korean text, readable but integrated into the panel.
- Korean in-image text: set the caption box in Korean as “그때, 창문 속 사람이 먼저 웃었다.” and optional small SFX near the fluorescent light as “지지직…”. Keep signage short and legible: “다음 역  영등포구청”, “문에 기대지 마세요”, “2호선 막차”.
- Color palette: muted blue-purple, deep navy, steel gray, desaturated cyan, dirty off-white fluorescent highlights, faded red/orange safety sticker accents, and near-black shadows.
- Border/shadow: crisp clean line art with thin outlines, controlled cel-shaded shadows, soft drop shadow under the subject, and dark edge vignette at about 18% opacity.
- Rendering style: Korean horror webtoon linework with realistic subway detailing, restrained facial expression, smooth digital shading, crisp reflective surfaces, and cinematic panel composition.

[5. VISUAL STYLE]
- Camera / lens: 35mm documentary-style perspective, eye-level framing, f/2.8 look with shallow but readable depth separation.
- Lighting: overhead subway fluorescent light from above and slightly front-left, with low-contrast fill from the window reflections, cyan LED spill from signage, and deeper shadow falloff toward the far end of the car.
- Color grade: cool blue-violet grade with steel-gray midtones, restrained saturation, blackened shadows, faint greenish fluorescent cast, and polished highlights on metal poles reminiscent of a late-night urban thriller.

[6. MOOD]
Korean psychological horror webtoon — a tense late-night commuter-scene vibe similar to the eerie restraint of 기기괴괴 and 0.0MHz, grounded in everyday Seoul subway realism, where normal signs, seats, lights, and reflections become quietly threatening.

[7. CRITICAL]
- Korean text accuracy: every Korean caption, sticker, LED display, SFX, route label, and notice must be rendered perfectly with no broken characters.
- The scene must stay non-graphic: no blood, no injury details, no explicit violence.
- The reflected face should remain unsettling but believable, not overtly monster-like.
- Keep the overall composition readable as a single webtoon panel with a clear focal point on the protagonist and the reflection.
- Include realistic readable Korean details where visible: “그때, 창문 속 사람이 먼저 웃었다.”, “다음 역  영등포구청”, “문에 기대지 마세요”, “2호선 막차”, “지지직…”.

[8. 🚫 PROHIBITED]
- Fake official seals / certifications
- Broken Korean characters