1girl, amami_haruka, b1ack_illust, bad_twitter_id, blue_one-piece_swimsuit, breasts, brown_hair, cleavage, competition_swimsuit, covered_navel, full_body, green_eyes, hair_ribbon, highleg, highleg_swimsuit, idolmaster, idolmaster_(classic), jacket, jacket_partially_removed, large_breasts, looking_at_viewer, one-piece_swimsuit, ribbon, seiza, short_hair, simple_background, sitting, solo, swimsuit, two-tone_swimsuit, white_background