1girl, arona_(blue_archive), bikini, black_bikini, blue_archive, blue_eyes, blue_hair, blush, collarbone, eyes_visible_through_hair, flat_chest, frilled_bikini, frills, hair_over_one_eye, hairband, halo, looking_at_viewer, multicolored_hair, navel, open_mouth, pink_hair, round_teeth, saeki_tatsuya, short_hair, smile, solo, standing, standing_on_one_leg, swimsuit, teeth, two-tone_hair, upper_teeth_only, white_hairband