2girls, armpit_crease, asakura_nuruma, ball, beach, beachball, bikini, bikini_under_clothes, black_hair, blue_eyes, blue_sky, blurry, blurry_background, blush, braid, breasts, cleavage, clothes_lift, collarbone, covered_nipples, day, finger_to_own_chin, hair_between_eyes, hair_ornament, hairclip, holding, holding_innertube, innertube, large_breasts, long_hair, looking_at_viewer, makinohara_shouko, multiple_girls, navel, ocean, outdoors, rabbit_hair_ornament, red_bikini, sakurajima_mai, seishun_buta_yarou, shiny_skin, shirt, shirt_lift, side-tie_bikini_bottom, single_braid, sky, smile, stomach, string_pull, swimsuit, thighs, watch, water, wet, wet_clothes, wet_face, wet_shirt, wet_swimsuit, white_bikini, wristwatch, yellow_innertube