Rule 34 Dev - 00s 2007 4girls afloat artist_name awatake_takahiro barefoot black_hair dam dated feet innertube legs long_hair looking_at_viewer low_twintails multiple_girls no_pants one-piece_swimsuit original outdoors school_swimsuit school_uniform serafuku short_hair soles swim_ring swimming swimsuit swimsuit_under_clothes toes twintails water watermark web_address|278819775