1girl, arknights, ball, beachball, bikini, black_eyes, black_hair, breasts, goggles, goggles_around_neck, id_card, la_pluma_(arknights), la_pluma_(summer_flowers)_(arknights), medium_breasts, milluun, official_alternate_costume, parted_lips, partially_submerged, plant, pool, short_hair, solo, swimsuit, water, white_bikini