プロンプト
Two seats on a night bus, city lights smearing past the window like watercolor. 2026 trade-cover trend: oversized structural typography, high-contrast palette, strong readability at thumbnail size. All cover text must be Japanese only; render the quoted title and author name in correct, complete Japanese characters. Book cover with title "夜行バスと君" and author name "水科ほのか" rendered on the cover.. Workflow direction: Create the finished flat front-cover artwork itself, not a photograph or mockup of a physical book. The rectangular front cover must fill the entire output canvas edge to edge, viewed perfectly straight-on with the camera perpendicular to the artwork. Build one compelling genre-appropriate key image on a single strong subject in a single scene — never a collage of competing motifs. Follow the 2026 trade-cover direction: oversized structural title typography treated as part of the artwork, a high-contrast palette, an author name placed deliberately and secondary to the title, short correctly rendered title text in the requested language enclosed in quotation marks, and a silhouette that stays readable at 100-pixel thumbnail size in a two-second scroll, all with trim-safe breathing room.
Style-specific direction:
Style: polished contemporary romance book cover with emotionally warm editorial illustration; confident saturated color over timid pastel, applied with refined restraint.
Subject: preserve the requested people, relationship cue, setting, and period; communicate intimacy without adding extra characters.
Composition: portrait front-cover layout, close but uncluttered focal grouping, delicate botanical framing, clean title-safe space, thumbnail readability.
Lighting or Color: soft diffused golden-hour light with confident saturation; blush and champagne warmed by one deeper contrast tone such as burgundy or deep navy.
Typography: render the exact quoted title once in elegant flowing script scaled large enough to anchor the composition and the exact quoted author once in clean small capitals; keep both crisp and correctly spelled.
Output format: flat front-cover artwork only, filling the canvas edge to edge and viewed perfectly straight-on; no physical book object, spine, pages, back cover, perspective, mockup, badge, logo, watermark, duplicated text, or explicit content.. Avoid: physical book, 3D book, book mockup, product mockup, spine, pages, page edges, back cover, perspective view, angled cover, tabletop, pedestal, hands holding a book, room scene, drop shadow around the cover, misspelled title, crowded typography, weak focal point, busy collage of competing motifs, washed-out low contrast, text too close to edges, unrelated imagery, garbled author name, misspelled or duplicated title, misspelled author, extra people, stiff pose, harsh noir lighting, crowded typography, mockup, spine, watermark
