1girl, aga_marino, alternate_costume, ass, back, bad_twitter_id, black_hair, blue_sky, blunt_bangs, breasts, brown_eyes, cloud, cloudy_sky, competition_swimsuit, cowboy_shot, day, grass, green_one-piece_swimsuit, hand_on_own_chin, idolmaster, idolmaster_shiny_colors, lake, large_breasts, light_particles, long_hair, looking_back, mayuzumi_fuyuko, one-piece_swimsuit, open_mouth, outdoors, pool, poolside, sky, solo, sweatdrop, swimsuit, tree, two_side_up, water