{"variants":[{"variant_id":"BG_1","name":"Morning lived-in kitchen state","area":"kitchen side","t2i_prompt":"Photorealistic cinematic still of BASE with only background-state changes on the LEFT PANEL kitchen side. Same cramped modern Korean rooftop studio apartment, same pale worn wallpaper, worn wood-patterned vinyl flooring, low ceiling, and overall layout. Keep the room empty of people. Change the kitchen-entry area into an active early-morning lived-in state: thin warm morning sunlight slicing in, stronger contrast between sunlit strip and deeper interior shadow, old stainless steel sink area looking recently used with faint moisture and subtle steam haze near the counter, compact TV switched off, neat domestic clutter remaining realistic and restrained. No new major props, no overturned furniture, no blood. RIGHT PANEL bedroom side remains as in BASE, unchanged.","change_summary":"Kitchen side only: morning lighting shift with faint steam/moisture around sink and TV off; otherwise orderly."},{"variant_id":"BG_2","name":"Night bloodstained bedroom reveal","area":"bedroom side","t2i_prompt":"Photorealistic cinematic still of BASE with only background-state changes on the RIGHT PANEL bedroom side. Same cramped modern Korean rooftop studio apartment, same wallpaper, flooring, low ceiling, and furniture placement. Convert the bedroom area into a night horror aftermath state: thin curtain closed or mostly closed at the window area, cold blue TV spill mixed with a weak warm floor stand lamp, dark pooled blood across the floorboards, smeared bloody footprints leading toward the curtain, blood smears across the flooring near the bed, stained bedding, and a wet red circular mark brushed onto the wall above the bed. Keep furniture in place, not overturned. LEFT PANEL kitchen side remains as in BASE, unchanged and dim. No people, no bodies, no handheld props visible.","change_summary":"Bedroom side only: night lighting, curtain closed, blood pooled/smeared on floor, footprints, stained bed, red circle on wall."},{"variant_id":"BG_3","name":"Spotless reset bedroom","area":"bedroom side","t2i_prompt":"Photorealistic cinematic still of BASE with only background-state changes on the RIGHT PANEL bedroom side. Same cramped modern Korean rooftop studio apartment, same bed, desk, shelves, lamp, window, wallpaper, flooring, and low ceiling. Transform the bedroom into an unnaturally cleaned reset state: all blood and stains completely gone, floor clean, bedding neatly made, surfaces wiped down, room feeling overly tidy and recently restored. Cool daylight from the side window with dim indoor shadow, desaturated blue-gray tension. Thin curtain present in a neutral resting position. LEFT PANEL kitchen side remains as in BASE, unchanged. No people, no props emphasized, no mess.","change_summary":"Bedroom side only: cleaned after bloodstains, restored to spotless neat condition in cool daylight."},{"variant_id":"BG_4","name":"Dusk wrecked full apartment","area":"full","t2i_prompt":"Photorealistic cinematic still of BASE with only background-state changes across BOTH PANELS of the full apartment. Same cramped modern Korean rooftop studio apartment, same wallpaper, flooring, low ceiling, and core layout, but now in a disturbed late-dusk wrecked state. Open window on the bedroom side letting in weak amber dusk light and damp air; interior mixed with dim shadow. Furniture and household items are violently disturbed: one or more dining chairs overturned on the kitchen/living side, small items scattered across the floor, bedding rumpled on the bedroom side, surfaces disordered, scuffed floor and wall texture more visible. Add a blood-red circular mark painted on the bedroom-side wall. Keep the room empty of people. No bodies, no handheld props foregrounded.","change_summary":"Full room: dusk lighting, open window, room wrecked with overturned chairs and scattered items, rumpled bed, red circle on wall."}]}