A poster of a couple of anime characters standing next to each other

Please change the filled area to the background.,

(worst quality, low quality:1.4), (lip, nose, tooth, rouge, lipstick, eyeshadow:1.4), (blush:1.2), (jpeg artifacts:1.4), (depth of field, bokeh, blurry, film grain, chromatic aberration, lens flare:1.0), (1boy, abs, muscular, rib:1.0), greyscale, monochrome, dusty sunbeams, trembling, motion lines, motion blur, emphasis lines, text, title, logo, signature,(worst quality, low quality:1.4),old,aged,ugly,strange face,strange fingers,(mutilated hand),different pupils,muscle, (greyscale, monochrome:1.1), strange face,strange fingers,different pupils, 3D face, cropped, lowres, text, jpeg artifacts, signature, watermark, username, blurry, artist name, trademark, watermark, title, multiple view, black person, black leather,extra hands, extra legs,extra head,