1girl, armpits, arms_up, arona_(blue_archive), bikini, black_bikini, blue_archive, blue_hair, bow, braid, closed_eyes, frilled_bikini, frills, hair_bow, hair_over_one_eye, halo, innertube, navel, omochishiki, open_mouth, outstretched_arms, ribbon, short_hair, sitting, smile, solo, swimsuit, thighs