2girls, arms_behind_back, bikini, black_bikini, blue_sky, blush, bocchi_the_rock!, breasts, cloud, collarbone, day, gotoh_hitori, kita_ikuyo, looking_at_viewer, medium_breasts, multiple_girls, ocean, open_mouth, outdoors, red_hair, rouka_(akatyann), side_ponytail, sky, smile, swimsuit, thighs, wet, white_bikini, yellow_eyes