The background is a

Midjourney Bot 更新时间：2023-11-13 00:29:04
The background is a wallpaper of a female hero holding a gun, featuring concise new popular illustrations, quirky comic art, neon realism, derppunk, rangefinder lenses, and dreamy portrait paintings, commissioned for production --s 750 --ar 9:16 --niji 5

The background is a wallpaper of a female hero holding a gun, featuring concise new popular illustrations, quirky comic art, neon realism, derppunk, rangefinder lenses, and dreamy portrait paintings, commissioned for production --s 750 --ar 9:16 --niji 5
素材来源：Midjourney官网