a masterpiece, top quality, ultra-detailed, anime style, classic hentai aesthetics of the 90s and early 2000s, clean line art, smooth shading, set in a post-apocalyptic, ruined city, destroyed buildings with shattered walls, piles of rubble, broken glass, rubbish, dust and smoke in the air, overcast daylight, a completely naked young woman with long black hair and fair skin, on all fours, her back arched sharply, her eyes wide open in shock, her elbows resting on the ground, her skin glistening with sweat, behind her, a large, muscular, green-skinned, reptilian-like mutant, with powerful, muscular arms and torso, short horns on his head, yellow eyes with vertical pupils, sharp teeth bared in a snarl, twisted arms with varying numbers of fingers gripping her hips, a huge, thick, dark penis penetrates the girl deeply from behind, a long, slender tail, reddish at the tip, scars on her body, she is on her knees, outdoor sex amidst the ruins, the ground with small puddles, detailed anatomy, realistic proportions with a hentai twist.