A person in a black leather coat activates an alien-core belt beneath a windy, overcast sky in a dark transformation video

Prompt

Create a video of my double: keep the face exactly the same, do not change the facial features or face shape, and do not beautify it.
Style reference: 仮面 BLACK SUN, realistic dark tone, with a biotech and alien technology feel; oppressive and somber.
Appearance before transformation: black leather trench coat and black shirt, bangs covering the forehead, forehead not visible, gloomy and composed.
Belt: patterned, with an alien energy core, not toy-like.
Scene: an open outdoor area on an overcast day, gray-blue sky, windy.

帮我生成分身视频：保持脸部完全一致，不改变五官和脸型，不美化。
风格参考仮面 BLACK SUN，写实暗黑，生物科技与外星科技感，压抑沉重。
变身前造型：黑色皮质风衣＋黑衬衫，刘海遮额，不露额头，阴郁沉稳。
腰带：图了，异形能量核心，无玩具感。
场景：阴天户外空地，灰蓝天空，有风。

• The prompt is in Chinese: paste it as is — the model understands it.