Generate a horizontal 2:1 couple-avatar diptych with this theme: {{scene_theme}}.

The canvas must be one complete horizontal 2:1 composition, but it must also be designed as two equal square avatar zones. The left half must work as a standalone 1:1 avatar crop, and the right half must also work as a standalone 1:1 avatar crop. After either half is cropped on its own, it should still contain a complete subject, clear silhouette, independent background, stable visual weight, and readable emotion. The center must read as a clear invisible crop boundary: use subject spacing, negative space, a road, window frame, light band, railing, doorway, tree shadow, or air gap to naturally separate the two avatar zones, so the viewer can tell each side can be cropped independently. Do not add a hard divider, frame, white border, collage border, or UI separator. Do not let a face, head, body core, important prop, or key lighting cue be cut by the center line. Do not place the main subject across both halves. Do not let either crop become empty scenery, fragments, or a tiny unreadable figure.

The two halves should represent two members of a couple. They need visible complementary differences: silhouette, hairstyle, clothing weight, body shape, posture, temperament, color temperature, lighting, or surrounding objects should naturally distinguish them. Do not make them the same character recolored, a simple mirror image, a fixed pink-and-blue trope, indistinguishable twins, or two figures with the same visual identity. Their differences should support the couple relationship, not split the image into two unrelated avatars.

When viewed as the full 2:1 image, the diptych must add relational meaning beyond two separate avatars. The couple atmosphere must be clear; do not merely place two isolated people in the same large background. Use running toward each other, looking across the center, passing an umbrella, handing over earbuds, one shared beam of light, the same wind direction, clothing edges, gestures, shadows, reflections, one road, one window, one festival, or echoing objects to connect the two sides. The center area may contain subtle visual resonance, but each main subject must still stay inside its own 1:1 zone. The halves should feel like two viewpoints inside the same moment: separable as avatars, but stronger as a pair.

Keep each 1:1 zone readable as an avatar. Prefer close-up, half-body, medium-shot, or dynamic compositions with clear head-and-shoulder contours. Use long shots or back views only when the theme truly calls for them. The figures must not be so small that they become ordinary landscape decoration, and the background must not become the main subject. Each half needs a clear focal point, clean negative space, and social-avatar readability.

Do not make every theme use the same composition. Actively choose a different camera language and visual skeleton from the theme: film photography, animated-film mood, soft illustration, game-world lighting, city night scene, everyday snapshot, festival atmosphere, low angle, side profile, turning back, running, leaning closer, window separation, umbrella, reflection, or another suitable mechanism. Style variation must serve the couple-avatar structure, not only swap the background.

Infer the visual language, season, clothing, environment, and emotion from the current theme. If the theme comes from a game, animation, novel, film, or fictional world, preserve recognizable character or world identity, core colors, costume family, landmarks, elemental symbols, festival objects, and atmosphere, then translate them into this couple-avatar diptych structure. Do not copy official screenshots, character sheets, UI, logos, or card compositions.

The result should be refined, clean, and finished. It may lean toward illustration, animated-film mood, Japanese literary photography, soft watercolor, detailed digital painting, filmic snapshot, or gentle cinematic lighting, but it must serve the current theme. Let the palette arise naturally from the theme. The two sides may use different color temperatures or materials, but the full image must still feel like one world and one moment. Keep lighting, weather, atmospheric depth, particles, paper texture, film grain, and environmental detail restrained so they do not overpower the relationship.

Avoid: vertical images, square images, non-2:1 ratio, ordinary couple photos, a single two-person illustration, grid panels, manga panels, hard collage edges, frames, white borders, UI buttons, text, subtitles, logos, watermarks, signatures, decorative borders, busy patterns covering the subjects, tiny figures, subjects crossing the center line, unclear center zoning, failed left/right avatar crops, identical characters, simple mirroring, fixed pink/blue gender coding, no couple relationship, scenery without avatar focus, three examples that look like the same composition with different backgrounds, low clarity, distorted limbs, broken faces, and unrelated elements leaking into the theme.