2girls, arms_at_sides, ass, ass-to-ass, back, back-to-back, blue_one-piece_swimsuit, blurry, blurry_background, breasts, brown_hair, caustics, closed_mouth, collarbone, competition_school_swimsuit, covered_navel, cowboy_shot, depth_of_field, dripping, from_side, futami_ami, futami_mami, grin, hair_bobbles, hair_ornament, holding_hands, idolmaster, idolmaster_(classic), idolmaster_2, interlocked_fingers, lane_line, leaf, looking_back, medium_hair, multiple_girls, one-piece_swimsuit, one_side_up, orange_eyes, partially_submerged, pool, school_swimsuit, shiroyu, short_hair, siblings, side_ponytail, small_breasts, smile, standing, star_(symbol), star_hair_ornament, swept_bangs, swimsuit, thighs, twins, water, wet, wet_hair