仰向けつま先立蹲踞開脚

(masterpiece, best quality:1.2), crotch shot, extreme close-up on groin, focus on thighs, extreme hip thrust, pelvis pushed forward, dynamic foreshortening, deep squatting, on tiptoes, elevated hips, horizontal thighs, wide leg spread, leaning back, arching back, upper body tilted backward, looking at viewer, low-angle shot, front view