1girl, bird, blue_sky, blush, breasts, cloud, covered_navel, day, floral_print, hands_on_headwear, hands_up, hat, idolmaster, idolmaster_million_live!, kaiso_(kaisooekaki), looking_at_viewer, makabe_mizuki, one-piece_swimsuit, outdoors, purple_hair, red_one-piece_swimsuit, short_hair, sidelocks, sky, small_breasts, smile, solo, sun_hat, swimsuit, swimsuit_skirt, upper_body, white_headwear, yellow_eyes