Battleground bondage: a cheerful prisoner's plight - a photorealistic 4k tale of pain and pleasure

In the daylight of a battle-scarred battlefield, a half-naked woman with short brown curly hair, glasses with black rims, and a long purple ponytail stood bent forward in a combat exosuit. Her real hands were shackled behind her back, while the arms of the exoskeleton held a combat bolter gun. Her slim waist, narrow hips, small breasts, and shaved ponytail contrasted starkly with her bound and shackled legs, bent at the knees in a combat stance. A sex machine, with a massive metal dildo, invaded her from behind, fucking her vagina relentlessly. Despite the pain etched on her face, a cheerful expression still graced her open mouth, spread legs revealing a well-groomed pussy.