samaru_(seiga), kizuna_akari, kotonoha_akane, kotonoha_aoi, yuzuki_yukari, year_2024, 4girls, :o, alternate_costume, ass, ball, beach_volleyball, bikini, blue_bikini, blue_eyes, blue_hair, blue_sky, blush, braid, breasts, clenched_hands, cloud, cloudy_sky, compression_sleeve, eyewear_on_head, hands_up, horizon, kneeling, long_hair, looking_at_viewer, low-tied_sidelocks, low_twin_braids, medium_breasts, multiple_girls, nose_blush, ocean, on_ground, one-piece_swimsuit, orange_bikini, outdoors, pink_eyes, pink_hair, ponytail_with_braided_base, purple_eyes, purple_hair, red_bikini, red_eyes, sand, short_hair_with_long_locks, siblings, side-tie_bikini_bottom, side_ponytail, sidelocks, sisters, skinny, sky, smile, sports_sunglasses, sun, sunglasses, swimsuit, tinted_eyewear, twin_braids, visor_cap, volleyball, volleyball_(object), volleyball_net, w_arms, white_one-piece_swimsuit, yellow-tinted_eyewear, yukadon, commentary_request, vocaloid, voiceroid