vertical video, 9:16, 10 seconds, ultra realistic, cinematic lighting, Japanese woman age 20, natural beauty, medium-length black hair, casual outfit, modern apartment room, soft daylight, high detail skin texture, shallow depth of field, subtle camera push-in Scene starts with the woman sitting casually on a sofa, holding her smartphone, relaxed expression with a slight smile, natural posture, calm atmosphere, soft daylight coming through the window At around 2 seconds, a notification appears on her phone, her expression suddenly freezes, smile disappears, subtle tension appears in her face, ambient sound slightly distorts, lighting becomes slightly colder, her eyes begin to lose warmth From 3.5 seconds, dark shadow energy begins to emerge from behind her and from the edges of the frame, black smoke-like particles slowly creep toward her body and wrap around her arms, her breathing becomes heavier, her head tilts slightly downward, strands of her hair start floating unnaturally From 5.5 seconds, the dark energy rapidly spreads across her body like an infection, her casual clothes morph into a sleek dark villain outfit with black and deep purple tones and subtle glowing patterns, her eyes begin to glow faintly, her expression shifts into a calm but dangerous look, lighting becomes high contrast with dramatic shadows, energy particles intensify From 7.5 seconds to the end, she slowly raises her head and looks directly into the camera with a slight sinister smile, fully transformed, dark aura swirling around her, her hair moves as if blown by slow wind, camera stops and holds on her face, strong final pose, cinematic pause, slight vignette, subtle flicker effect at the end sound design: soft ambient at beginning → slight distortion at notification → deep bass impact at transformation peak → subtle dark hum at the end facial acting emphasis: micro expression changes, gradual loss of warmth in the eyes, transition from natural smile to emotionless to slightly sinister expression high quality particle simulation, volumetric lighting, realistic shadow interaction, smooth transitions without hard cuts