1girl, ahoge, athletic_leotard, blush, breasts, closed_mouth, greyscale, gymnastics, heart, hoshii_miki, idolmaster, idolmaster_(classic), leg_up, leotard, long_hair, looking_at_viewer, medium_breasts, monochrome, simple_background, smile, solo, split, standing, standing_on_one_leg, standing_split, swimsuit, thighs, tsurui, white_background