1girl, b1ack_illust, bikini, blue_eyes, blue_hair, blush, bow, breasts, cleavage, collarbone, dot_nose, front-tie_bikini_top, front-tie_top, hair_bow, hair_ornament, hairpin, hands_up, idolmaster, idolmaster_million_live!, idolmaster_million_live!_theater_days, long_hair, looking_at_viewer, medium_breasts, navel, open_mouth, red_bikini, shiraishi_tsumugi, shy, simple_background, solo, swimsuit, upper_body, very_long_hair, white_background, wince