1girl arona_(blue_archive) bare_arms bare_shoulders bikini black_bikini blue_archive blue_eyes blue_hair blush braid chair closed_mouth collarbone feet_out_of_frame hair_ribbon hairband halo highres leonat multicolored_hair navel own_hands_together pink_hair ribbon simple_background single_braid solo standing streaked_hair sweat swimsuit white_background white_hairband white_ribbon