A striking image of a fierce mecha girl with flowing raven hair, intense expression, poised in a dynamic combat stance. Her high-definition design showcases ultra-realistic detail with fire embers dancing around her, creating a dramatic scene. The cinematic lighting and bokeh effect enhance the depth of field, drawing focus to her determined gaze. This piece of concept art, rendered with unreal engine 5 and RTX capabilities, captures a photorealistic style. Despite her formidable presence, subtle imperfections like missing arms and hands add a unique narrative element. The overall composition evokes a powerful blend of realism and science fiction.