1girl, bare_shoulders, bikini, bikini_top_only, breasts, collarbone, earbuds, earphones, greyscale, idolmaster, idolmaster_cinderella_girls, kurushima_gire, leaning_forward, looking_at_viewer, manabe_itsuki, medium_breasts, monochrome, outstretched_arm, parted_bangs, ponytail, removing_earbuds, short_sleeves, sketch, smile, sweat, swimsuit, upper_body