1girl, armpits, belt_buckle, blush, breasts, buckle, closed_eyes, glasses, greyscale, hair_tucking, idolmaster, idolmaster_cinderella_girls, long_hair, medium_breasts, monochrome, sasa_koutoyomu, shirt, simple_background, sleeveless, sleeveless_shirt, solo, steam, straight_hair, striped, striped_shirt, sweatdrop, vertical-striped_shirt, vertical_stripes, watch, white_background, wristwatch, yagami_makino