2girls, d, alternate_costume, bare_arms, bare_shoulders, barefoot, beach, bikini, black_hair, blue_sky, border, breasts, brown_eyes, brown_hair, cloud, day, frilled_bikini, frills, hibike!_euphonium, high_ponytail, holding_hands, horizon, kousaka_reina, long_hair, looking_at_another, low_ponytail, multiple_girls, navel, ocean, open_mouth, oumae_kumiko, outdoors, outside_border, pink_bikini, psylduck, purple_bikini, shore, sky, small_breasts, smile, standing, stomach, swimsuit, water, white_border