masterpiece, best quality, 1girl, solo, long hair, straining, clenched teeth, wince, pain, raised eyebrows, nose blush, embarrassed, closed eyes, curvy, huge breasts, from below, huge ass, sitting, thick thighs, (white shirt, black necktie, black pants, hairclip, formal:1.3), (fart, farting, yellow gas:1.1), <lora:ufl:0.7>, <lora:Nao_LoRA:1>