1girl, bare_arms, bare_shoulders, black_one-piece_swimsuit, blue_archive, blush, closed_mouth, competition_swimsuit, covered_navel, day, earrings, grey_hair, head_out_of_frame, highleg, highleg_swimsuit, jewelry, nenosame, official_alternate_costume, one-piece_swimsuit, outdoors, pulled_by_self, shiroko_(blue_archive), shiroko_(swimsuit)_(blue_archive), smile, solo, strap_pull, stud_earrings, swimsuit