Girl showing ass to camera, is corean girl 17 years old, her sister is 19 years

girl showing ass to camera, is corean girl 17 years old, her sister is 19 years old, both show ass to camera and smile, best quality and detailed, picture art, (Top Quality、8K、​masterpiece:1.3))

(nsfw:1.5),ng_deepnegative_v1_75t,deformed, missing limbs,amputated,pants,shorts,cat ears,bad anatomy,disfigured, poorly drawn face, mutation, mutated,ugly, disgusting, blurry, watermark, watermarked, oversaturated, obese, doubled face,b&w, black and white, sepia, frekles, no masks,duplicate image, blur, paintings, sketches, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, monochrome, grayscale, bad anatomy,(fat:1.2),facing away, looking away,tilted head,lowres,bad anatomy,bad hands, text, error, missing fingers,extra digit, fewer digits, cropped, worstquality, low quality, normal quality,jpegartifacts,signature, watermark, username,blurry,bad feet,cropped,worst quality,low quality,normal quality,jpeg artifacts,signature,watermark,