Prompt: (masterpiece),ultra-detailed, best best quality, gigantic breasts, ass stacking, 2 girls, <lora:Saya-ass stacking:1.5>, ass, ass focus, book, bookshelf, cameltoe, facing away, from behind, indoors, long hair, panties, partially visible vulva, red hair, skirt, underwear
Negative prompt: lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fever digits, cropped, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, username, blurry, artist name, bad feet, bad fingers, (worst quality:1.4), (low quality:1.4), (monochrome:1.1),  bad-hands-5, bad_prompt_version2, easynegative, FastNegativeV2, ng_deepnegative_v1_75t, verybadimagenegative_v1.3