The background is a sports gym、indoor

(big breasts:1.8),((monochrome,grayscale)),signature,(worst quality, low quality:2), normal quality,lowres,skin spots,acnes,skin blemishes,facing away,tilted head,bad anatomy,bad hands,extra digit,fewer digits,cropped,watermark,username,blurry,bad feet,poorly drawn hands,poorly drawn face,mutation,deformed,jpeg artifacts,,extra fingers,fewer digits,extra limbs,extra arms,extra legs,malformed limbs,fused fingers,too many fingers,long neck,polar lowres,bad body,bad proportions,gross proportions,text,error