2girls, animal_ear_fluff, animal_ears, bikini, black_hair, blue_archive, blue_sky, blush, breasts, cat_ears, cat_girl, cleavage, closed_mouth, cloud, collarbone, day, frilled_bikini, frills, from_side, halo, hoshino_(blue_archive), hoshino_(swimsuit)_(blue_archive), inflatable_toy, li_se, long_hair, looking_to_the_side, medium_breasts, multiple_girls, navel, off-shoulder_bikini, off_shoulder, official_alternate_costume, outdoors, red_eyes, serika_(blue_archive), serika_(swimsuit)_(blue_archive), sky, solo_focus, stomach, sunlight, swimsuit, thighs, twintails, very_long_hair