2girls, d, bare_arms, bare_legs, black_bow, blonde_hair, blue_one-piece_swimsuit, blush, bow, breasts, brown_hair, cleavage, collarbone, engo_(aquawatery), fate_testarossa, hair_between_eyes, hair_bow, hair_ribbon, long_hair, lyrical_nanoha, mahou_shoujo_lyrical_nanoha, mahou_shoujo_lyrical_nanoha_a's, medium_breasts, multiple_girls, one-piece_swimsuit, open_mouth, poolside, red_eyes, ribbon, school_swimsuit, shiny_skin, sitting, smile, swimsuit, takamachi_nanoha, twintails, very_long_hair, w, white_ribbon