1girl, o, afloat, armpits, arms_at_sides, ass_visible_through_thighs, black_hair, blue_one-piece_swimsuit, blunt_bangs, breasts, caustics, chestnut_mouth, collarbone, competition_swimsuit, covered_navel, cowboy_shot, dutch_angle, from_above, goggles, green_eyes, hair_bun, hamaguchi_ayame, idashige_(walkietalkie), idolmaster, idolmaster_cinderella_girls, linea_alba, long_hair, looking_at_viewer, lying, medium_hair, on_back, one-piece_swimsuit, open_mouth, partially_submerged, sidelocks, single_hair_bun, small_breasts, solo, swimsuit, thighs, water, wet, wet_clothes, wet_hair, wet_swimsuit