1girl, armpits, arms_up, bikini, cropped_shirt, flat_chest, frilled_bikini, frills, greyscale, idolmaster, idolmaster_million_live!, idolmaster_million_live!_theater_days, looking_at_viewer, makabe_mizuki, mimizubare, monochrome, open_clothes, open_shirt, parted_lips, shirt, short_hair, sidelocks, sleeveless, sleeveless_shirt, solo, swimsuit, tied_shirt, upper_body, wavy_hair, white_background