4girls, ahoge, animal_ears, bandana, bangs, bikini, black_hair, blue_sky, blue_swimsuit, blunt_bangs, bowl, brown_eyes, brown_hair, chair, crossover, crown, dated, day, from_behind, glasses, gradient_sky, headgear, lobster, long_hair, lounge_chair, multiple_girls, one-hour_drawing_challenge, outdoors, partially_submerged, pince-nez, ponytail, poolside, rabbit_ears, red_bikini, sarong, school_swimsuit, short_hair, sky, swimsuit, tan, water, wavy_hair, wet