火车顶武士对决(Train Rooftop Fight) prompt

Single continuous shot 15s: The camera begins below the train roof level — an extreme low angle looking up, the grey sky above and the train's metal roof surface filling the upper frame, power line cables visible on both sides, electric sparks already arcing between the cables and the roof surface. The FPV arm accelerates upward and crests the rooftop edge just as both female samurai warriors sprint into frame from opposite ends — dark armor catching the electric flash light, katanas already drawn — the camera dropping to roof level and sweeping into a full 360-degree orbit around both fighters as they clash center-roof, blades ringing, feet sliding on the curved metal surface, electric sparks erupting in curtains. The orbit completes and camera settles tight behind the first warrior as she draws back her katana in a full overhead swing — motion ramping into deep slow motion, the second warrior already reading the strike, arching her entire body backward in a deep spine bend, the blade passing centimeters from her face, a single small lock of dark hair separating in the slow motion wind. Motion snaps back as the second warrior drives her elbow into the first warrior's chest, both fighters exchange rapid blade-locked strikes, then lock arms, pivot, and drive each other off the edge — both bodies leaving the roof, tumbling sideways, camera descending with them, both hitting the river surface in twin white explosions, camera plunges beneath the surface — the world going deep blue-green, sunlight filtering down in shafts, both warriors still moving through the underwater space, the fight continuing in the silent slow drift of the river current. NO MUSIC / NO SFX. Total: 15s / 1 shot / 16:9.