1girl, d, amatsume_akira, antenna_hair, armpits, barefoot, brown_eyes, brown_hair, feet, flat_chest, foot_focus, foreshortening, from_below, hashimoto_takashi, kickboard, one-piece_swimsuit, open_mouth, outdoors, school_swimsuit, short_hair, smile, soles, solo, swimsuit, toes, wet, yosuga_no_sora