2girls, alternate_costume, bikini, black_hair, blue_eyes, competition_school_swimsuit, cup, day, degarashi_(ponkotsu), disposable_cup, eating, food, fruit, hair_between_eyes, high_ponytail, holding, holding_cup, holding_food, hozumi_shizuku, innertube, jewelry, light_purple_hair, long_hair, looking_at_another, magia_record:_mahou_shoujo_madoka_magica_gaiden, mahou_shoujo_madoka_magica, mariko_ayaka, multiple_girls, one-piece_swimsuit, open_mouth, purple_eyes, purple_innertube, ring, school_swimsuit, short_hair, sky, sleeveless, sleeveless_jacket, smile, sparkling_eyes, standing, swimsuit, watermelon, watermelon_slice, white_bikini