1girl, d, ahoge, artist_name, bare_arms, bare_legs, bare_shoulders, barefoot, beach, beach_umbrella, blue_one-piece_swimsuit, blue_sky, border, breasts, brown_eyes, cloud, crab, day, hair_between_eyes, kneeling, light_blush, long_hair, looking_at_viewer, name_tag, one-piece_swimsuit, onii-chan_wa_oshimai!, open_mouth, outdoors, oyama_mahiro, sand, school_swimsuit, sky, small_breasts, smile, solo, strap_slip, swimsuit, twitter_username, umbrella, very_long_hair, water, water_drop, wet, white_border, yama_h15