1girl, animal_ears, bare_shoulders, beach, bikini, black_bikini, black_hair, blue_archive, blush, breasts, cat_ears, collarbone, frilled_bikini, frills, halo, long_hair, medium_breasts, navel, off-shoulder_bikini, off_shoulder, official_alternate_costume, rafrog, red_eyes, serika_(blue_archive), serika_(swimsuit)_(blue_archive), solo, stomach, swimsuit, twintails