akatsuki (akatsukinotsuki), shinosawa hiro, gakuen idolmaster, idolmaster, commentary request, highres, 1girl, blush, breasts, exhausted, feet out of frame, greyscale, hair ornament, hairclip, jacket, long hair, monochrome, nose blush, open clothes, open jacket, open mouth, parallel hairclips, shorts, simple background, sketch, small breasts, solo, sports bra, sweat, track jacket, trembling, very sweaty, white background