3girls, amane_lily, armpits, arms_behind_head, arms_up, ass, azuma_sawayoshi, ball, beachball, bikini, black_bikini, black_hair, blonde_hair, breasts, brown_hair, cloud, frilled_bikini, frills, green_bikini, holding, holding_ball, holding_beachball, looking_at_viewer, multiple_girls, navel, ocean, oroka_na_tenshi_wa_akuma_to_odoru, outdoors, parted_lips, polka_dot, polka_dot_bikini, ponytail, red_eyes, sky, small_breasts, smile, stomach, swimsuit, wading, white_bikini