1girl, o, armpits, arms_up, blush, breasts, choker, collarbone, greyscale, hair_ornament, hairpin, idolmaster, idolmaster_shiny_colors, kazano_hiori, looking_at_viewer, mole, mole_under_mouth, monochrome, nose_blush, ponytail, shirt, sidelocks, signalviolet, simple_background, sleeveless, sleeveless_shirt, small_breasts, solo, sweatdrop, upper_body, white_background